Colin Cook

Head Coach

Coaching Credentials

    • 2015 Ironman Raleigh 70.3, Syracuse 70.3, and Timberman 70.3 male 30-34 Age group winner
    • 2016 Ironman Florida 70.3 Age group winner (2nd Overall)
    • 2017 Ironman Puerto Rico 70.3 Age group winner (2nd overall amateur)
    • Multiple Half Ironman Finisher and Half Ironman World Championships qualifier (PR 4:14:36)
    • USAT All American in 2012 – 2016 
    • Currently teaches Tri Swim and Spin classes at the Nashua, NH YMCA and Brick group workouts at Hampshire Hills
    • Member of the Greater Nashua Y Tri Sprint Triathlon Organization Committee.
    • Played NCAA Division 1 Hockey in College
    • Coached College Hockey for 2 years

About Colin

I was born in Pepperell, MA, but currently reside in Brookline, NH with my wife Kristen and our 3 boys, Calvin, Elijah, and Gabriel. I grew up loving all sports, but primarily was focused on hockey. I played hockey through college and will always love the sport of hockey. However, after graduating from college, I started working at a desk job and stopped being as physically active as I used to be. I would go to the gym and workout, but had a hard time staying motivated and just didn’t have that drive I always had growing up. After following this path for a while, I decided to run the Boston marathon. During my training for the marathon, I decided that triathlons would be the next obstacle for me to tackle.

As soon as I started training for my first triathlon, I developed a tremendous passion for the sport. I really enjoy the variety in the training and the devotion it takes to obtain my goals. I love training and the triathlon lifestyle. I continue to train and devote myself to triathlon. As a result, I am also looking for new and innovative techniques and technologies for myself and my athletes to improve.

I currently coach athletes primarily in the US and New England, but have clients throughout the globe. I really enjoy helping people and get a tremendous satisfaction out of seeing my athletes succeed and meet their goals.

Read Coach Colin’s client testimonials.

Trent Hayden

Assistant Coach

Coaching Credentials

About Trent

I grew up in Barnstable, MA, on Cape Cod where my time was spent primarily focused on sailing and music. My athletic career didn’t begin until I was attending graduate school at the University of Massachusetts Amherst (age 22) where I entered my first ever race, a 12 mile trail run with over 4,000 feet of climbing! After recovering from that race (which took about a week) I knew I was hooked on long distance sport. Later that summer I competed in my first triathlon. Like many first timers, I began in the middle of the swim pack (big mistake), rode on a mountain bike (amazed at how fast the competitive bikers passed me), and took about 10 minutes in transition (my feet were wet).

Over the next few years I continued to compete in triathlon but didn’t have a plan or much of an idea how to improve. In the summer of 2009 I hired a private coach and really began training seriously. In 2010 I competed in my first Ironman at the now infamous Ironman St. George in Utah and had the best experience of my life. Through my Ironman training over the past five years and my previous experience in the sport, I have gained both the knowledge and appreciation for triathlon from some of the best coaches and triathletes in the country.

I now reside part time in Merrimack, NH, and (slightly warmer) Wilmington, NC. I’m excited to pursue my coaching passion as part of Peak Triathlon Coaching. Like Colin, I am interested in triathlon and sport as a lifestyle that promotes health, focus, and competition, while keeping a productive family, work, and social life. As a competitive age group athlete, I continue to develop and practice the most innovative and proven training philosophies in the sport. My latest educational development includes receiving my IRONMAN coaching certification, ACSM personal trainer certification, and AFPA sports, nutrition, and wellness nutrition certification.  If you’re looking to compete in your first triathlon or bring your performance to the next level, Peak Triathlon Coaching is for you!

Read Coach Trent’s client testimonials.

Elliot Kawaoka

Assistant Coach

Coaching Credentials

  • USA Triathlon Certified Level 1 Coach
  • 2x Ironman Kona Qualifier and finisher (2013, 2014)
  • Ironman 70.3 World Championship Qualifier
  • 3x Boston Marathon Qualifier (2012, 2014, 2018)
  • 10x Ironman Finisher (PR 9:23)
  • 2013 – 2016 USAT All-American
  • Ironman All World Gold Athlete
  • ONE Elite Multisport Member (2013, 2014, 2016)
  • USAT #1 ranked AZ Male in the 30-34 Age group
  • Many triathlon age group wins, podium finishes, and overall wins

About Elliot

I began competing in triathlons in 2009 after spectating and volunteering at Ironman Arizona. I was instantly hooked. I love everything about the sport: the athletes, the competition, and the supporting endurance community. Iron-distance triathlons appeal to me the most because it’s at these races where I truly feel like I’m pushing my body to its absolute limits. I love “digging deep” and seeing how my body reacts to the race’s harsh demands.

Before triathlon, I was a competitive baseball player. I grew up in Seattle and am a diehards Mariners and Seahawks fan. I was a middle infielder for my varsity baseball throughout high school. I played the piano for 16 years and was also lead alto saxophone player for my high school jazz band (yep, I was a huge band geek). I moved to Arizona for college after living in Seattle for 18 years. I graduated with an accounting degree at Arizona State University and decided to live in Tempe because I still don’t miss the rain at all!

Before 2009, I never swam, bike, or ran. I am a very competitive individual. I have an “all-or-nothing” personality. I want to be the best. I have worked incredibly hard and have become an elite age grouper. Most recently, I won my age group at Ironman Canada in Whistler. Over the past three years I’ve had the privilege of racing the Boston Marathon twice, 70.3 World Championship, and qualified for the Ironman World Championship in Kona two times.

My long term goal is to cross the finish line at Kona holding hands with professional triathlete Linsey Corbin. I am looking forward to using my knowledge and wisdom and helping others achieve their biggest endurance goals.

Karin Biskovich

Assistant Coach/Physical Therapist

Coaching Credentials

  • Triathlon Research Certified Coach
  • IRONMAN Certified Coach
  • 2015 Ironman All World Athlete, Gold Status (Top 1%, 35-39AG)
  • 2015 National Aquabike Champion
  • Ranked #1 in the Aquabike female 40-44 Age Group and 14th in Triathlon
  • USAT All American 2011-2015
  • 2nd place in 40-44 age group at 2014 USAT Nationals and World Triathlon Championships in Olympic and Sprint distances
  • 3rd place in 40-44 age group at 2015 World Triathlon Championships in Sprint distance
  • Top ten age group finish at USAT Age Group Nationals 2011-2104
  • Orthopedic outpatient physical therapist with 13 years experience

About Karin

I grew up in New England and took up gymnastics at an early age. After I tore my ACL and meniscus at age 14, I added swimming on the recommendation of my orthopedist. I continued with swimming and gymnastics through college and lettered in both sports at Cornell University. After college, I thought I would try my first triathlon since I had a background in swimming and track in high school. I competed for a few years before taking a break to get my master’s in Physical Therapy, get married, and start a family. I returned to triathlon in 2008 and each season I strived for a new goal. I won the Danskin and SheRox triathlons, went to California for the Best of the US Triathlon, and placed in the top ten at USAT Age Group Nationals for four years. In 2012-2015, I traveled for the World Triathlon Age Group Championships and even reached the podium 3 times. I love the unique experience of each and every race.

As a physical therapist I believe in using strength training and injury prevention to help athletes sustain in their sport as they age. I look forward to teaching and coaching my athletes to help them reach their goals in a healthy way.

Chris Veilleux

Assistant Coach

Coaching Credentials

  • USA Triathlon Certified Level 1 Coach
  • IRONMAN Certified Coach
  • Multiple Ironman 70.3 Finisher (PR: 4:45)
  • 2x Ironman Finisher (PR: 10:29)
  • 2015 Overall Winner Lakes Region Olympic Triathlon
  • Many age group wins and podium finishes
  • Ironman All World Silver Athlete 2015 (Top 5% Age Group)

About Chris

I grew up in Hooksett, NH and was a competitive baseball player and soccer player but also a jazz musician. I chose to follow the path of jazz saxophonist and music teacher and have been living and working professionally in and around the Boston area since 2004. I love performing, but more importantly I love teaching, and it is what I am most passionate about, and that is why I decided to start coaching.

I became interested in triathlon after watching my father in-law compete in a sprint distance race in 2009. I thought, hey that looked fun, maybe I should challenge myself to learn to swim and start cycling. This would be a nice addition to running which I had gotten into and had run my first marathon that year. After many humbling attempts at swimming laps in a pool, of which I couldn’t swim two consecutive laps without stopping, I decided to get adult swim lessons, and in 2010 I entered my first sprint distance race (oh yeah I also purchased my first ever road bike!). I have been hooked ever since, and in 2013 I competed in my first Ironman at Lake Placid, and finished with a respectable 11:55. After seeing what can happen through hard work over the course of 3 short years, I was all in!

Triathlon is a great way to become more active no matter what age or ability. We are so much more than our “jobs” and I believe that we all sell ourselves short when it comes to pushing ourselves, both physically and mentally. As a coach I hope to work with novice and seasoned, young and old, slow and fast athletes; anyone with an open mind and a willingness to work to find out what they are really capable of accomplishing!

Dan Greer

Assistant Coach

Coaching Credentials

  • USA Triathlon Certified Level 1 Coach
  • 1st Place Beach to Battleship M45-49 2015
  • 2 X Ironman Finisher (PR 10:07)
  • Multiple Half Ironman Finishes (PR 4:51)
  • Nearly 50 Triathlon Finishes

About Dan

I grew up down on the South Coast in Dartmouth, MA. I played all the normal childhood sports (football, basketball, baseball), and also raced BMX. I ran my first marathon in 1996 (it was the 100th running), and did my first Sprint Triathlon the next summer. I was hooked!

Over the next 15 years, I ran recreationally, and did quite a few sprint and a couple Olympic triathlons, in various states of fitness and finishing times.

As I approached my 40th Birthday, I decided it was time to get and stay in shape for good. I ran my 2nd marathon at the age of 40, and signed up for my first 70.3, which was Timberman. After several Timberman finishes, and support from my family, I decided to do my first 140.6, which was Beach to Battleship in 2013. As any smart triathlete would, I signed up to do it with the help of Peak Triathlon coaching! After 4 years as a client, I decided to get certified, and start coaching athletes myself.

Lucas Pozzetta

Assistant Coach

Coaching Credentials

  • USA Triathlon Certified Level 1 Coach
  • Professional Racing License
  • 2013-2016 USAT #1 Ranked 25-29 Male Triathlete in NH
  • 2015 Triathlon Age Group National Championships 3rd place Overall
  • 2015 USAT # 4 Nationally Ranked Male 25-29 Age Group
  • 2015 NH Union Leader Triathlete of Year
  • Many Triathlon Age Group Wins, Podium Finishes, and Overall Wins
  • 1 x Ironman Finisher (5th Place Overall PRO) 2017 Ironman Lake Placid (9:02:55)
  • Multiple Half Ironman Finisher (6th Place Overall PRO) 2016 70.3 Timberman (4:02:06)
  • USA Swimming Level 2 Coach (expired)
  • Coached Swimming (part time) 2012 – 2014
  • 2011 NCAA Swimming and Diving Championships DIII Qualifier (800Free Relay)
  • DIII Collegiate Swimmer in College

About Lucas

NH born and raised, I grew up loving just about every sport there was, but at the age of 11 I discovered swimming and from there my love for endurance sports has grown into my life’s passion. I competed in both Track & Field and Swimming throughout high school and  finally spent 4 years swimming at Keene State College under the 

tutelage of US National Open Water & Para Olympic Coach Jack Fabian. After school my story is one that is all too familiar, with my time and energy focused on career building desk work there was little time for physical activity and soon I was out of shape. It was not to long before I started to miss the thrill of competition and triathlon sort of just fell into my lap.

As soon as I started training for my first triathlon, it was like a switch went off and I felt like I was a kid again who had just discovered his love for swimming. It was at my very first race that I met Head Coach Colin Cook and it was not long before he and I started working together. In the few short years since that first race I have gone from Rookie to Professional athlete and this sport has truly become both my passion and my career. I am in love with the triathlon lifestyle and love to train, compete, and attempt to better myself each and every day.

Through my years of swimming, running and competing in triathlon I have gained a great deal of knowledge about training for these endurance sports. I have worked with and learned from many top level coaches and feel that I can help others to reach the Peak of their endurance sport potential!


Kathy Key

Assistant Coach

Coaching Credentials

  • USA Triathlon Certified Level 1 Coach
  • 2016 National Standard Distance Duathlon Champion
  • 5th place Worlds Standard Duathlon 2017
  • 3rd place Long Distance Duathlon National Championships 2017
  • 4th place Sprint National Championships 2015
  • Member of Team USA: 2015-2018
  • Many Triathlon and Duathlon Age Group Wins, Podium Finishes, and Overall Wins
  • USAT All American in 2014 – 2016
  • Orthopedic outpatient physical therapist with 31 year’s experience
  • Black Belt Kenpo Karate

About Kathy

I was born in Perth, Western Australia.  Playing and competing in sports has always been a large part of my life and it is a national past time in Australia.  I graduated with my Physiotherapy degree in 1986, spent time working and traveling the world until settling in New Hampshire in 1993.  I currently live in Bedford, NH with my husband Colm.  Our children have grown up and moved out so we are now empty nesters.

I have worked as a Physical Therapist since moving to the USA.  I also studied to achieve the level of Black belt in Kenpo karate and then transitioned into practicing and teaching Power Yoga.  I still remember the night when my husband was talking about entering a Half Ironman.  He had mentioned this so many times that I decided to sign him up for Timberman 70.3.  Of course being competitive, I also registered myself at the same time. At that time I could not swim 50 yards without a break.  I threw myself into training and fell in love with Triathlon. 

I love all aspects of Multisport.   Setting goals, testing fitness, training, competition and most of all the triathlon community.   My philosophy as a coach is to build sustainability, strength, and fitness both physically and mentally.  Focusing on building muscular strength is what allows the body to endure the consistent training that is required to reach athletic goals.  I believe every athlete can benefit from a coach, from a first time triathlete to an experienced age group athlete looking for a new edge to their training plan.  I am motivated by research and strive to continue my education in multisport to bring new information and training techniques to my athletes.  I believe we really don’t know what we are capable of until we “give it a go.”  I believe in good communication between athlete and coach to strive for a higher level of health, fitness and performance.


Erik Dellasanta

Assistant Coach

Coaching Credentials

  • Ironman Certified Coach
  • 3X Ironman Finisher (PR 10:43)
  • Multiple Half Ironman Fishshes (PR 4:42)
  • 2015 Ironman All World Athlete – Bronze
  • Many age group wins and podiums
  • Founded Lunenburg Triathlon Club
  • Played College Basketball – 1000 point scorer
  • Coached High School Basketball – 20 years


About Erik

I was born in Winchendon, MA and currently live in Lunenburg MA with my wife Gail and two kids – Vinny and Lyla. I played a wide variety of sports as a child.  I swam competitively at my local YMCA through elementaryschool. I genuinely enjoyed the process of setting goals and tying to beat my best times in each event. As I entered middle school, I found my love for basketball and played throughout high school and at Babson College. I also ran for my high school cross country team and qualified for states my junior and senior year.

After college I enjoyed a change of pace from traditional sports, and really enjoyed  mountain biking, which led me to enter a number of Adventure Races with 2 friends.  This was my first taste of true endurance sports and I loved the challenge! In 2010, a friend asked me to train with him for our first triathlon and from then on I have been hooked. That first race was a sprint and I was really nervous. As soon as I was done, I was driven to train because I knew I could be faster.  I gradually progressed to Olympic Distances, Half Ironmans and then my first Ironman in 2012.  I really enjoy the process of training, racing and finding a way to be more efficient and faster. I have learned so much and have enjoyed sharing my knowledge with our small Tri Club in Lunenburg. During this time, my wife also got the “triathlon bug”, but had a fear of water. We worked together in the pool and progressed to open water where she is now very comfortable.  This process was helpful for me to be able to understand how to help those people who may not be confident in the water. All of this has led up to me becoming a Triathlon coach, and share my passion for sport, competition and personal improvement.  Over the past few years, I feel I have come to understand the balance of being a parent of young kids, a husband, a teacher, a coach, and a triathlete.  I look forward to helping you learn, train, and race and accomplishing your goals!

Kristin Mainella

Nutrition & Wellness Coach

Coaching Credentials

  • Owner, Onk (Ankh) Nutrition & Wellness Solutions LLC
  • Master’s Degree in Education from East Stroudsburg University and a Bachelor’s degree in Exercise Physiology, with a Minor in Health from Plymouth State University
  • Certificate in nutrition from the University of Northern Colorado
  • Registered Dietitian and Certified Diabetes Educator
  • More than 25 years of experience in nutrition, exercise and wellness programming
  • All-American Soccer Player and inducted into the Hall of Fame at Plymouth State University 2016
  • Played college lacrosse
  • Played 5 years in the women’s soccer W-league, player of the week two times
  • Adventure Race finished 2nd place out of 200 co-ed teams
  • Competed in many triathlons, half-marathons in my career
  • Expert in sports nutrition

About Kristin

I grew up in Rhode Island and have been involved in a variety of sports since I was 3 years old. I started playing soccer when I was 10 years old but also swam, skied and played baseball and softball. In high school I played soccer, softball, basketball and track.

I have worked in a variety of environments including: clinical, hospital, university, health clubs, corporate and community settings. ​I believe in a comprehensive whole body (body, mind, spirit) lifestyle approach towards nutrition while developing an individualized plan for each client. I incorporate various modalities to help develop the best overall plan that works to meet the client’s specific health and performance goals and needs. Whether you are looking to lose weight, improve your sports performance, reduce your risk of chronic disease or simply learn how to eat better, you can have fun doing it.

My experience has shown me that by combining nutrition, exercise, and stress management and addressing the whole individual you can achieve your optimal performance.I use my extensive knowledge of nutrition along with creativity and enthusiasm to motivate my clients to reach their potential as athletes.

​When not working with clients, I enjoy mountain biking, hiking, skiing, soccer, snowshoeing, painting, drawing and writing screenplays. I am a competitive athlete and have competed and won numerous road races, marathons, triathalons, and adventure races. I was a college soccer coach at the University of Idaho. I have also been certified as a personal trainer, group exercise and spin instructor.

Onk Nutrition & Wellness Solutions offers both in-person counseling and remote counseling for your convenience from your own home or office.

I would love to work with you to reach your goals as I have helped many others do. I provide a personalized approach to nutrition and sports performance because no two people, conditions, health or environment are the same.

Leslie Why

Assistant/Nutrition Coach

Coaching Credentials

  • USA Triathlon Certified Level 1 Coach
  • RRCA Certified Running Coach
  • AFPA Certified Nutrition and Wellness Consultant, Sports Nutrition Focus
  • Director of Multisport for Hampshire Hills Athletic Club
  • 12x Half Ironman Finisher including qualifying and competing in the 70.3 World Championships 2x (PR 5:15)
  • Debut Ironman ~ North American Championship Mont-Tremblant W40-44 AG: 17th (PR 11:52)
  • USAT All American HM in 2009
  • 2007-2010 Sponsored Triathlete
  • Several Triathlon Age Group Podium Finishes and a 1st Overall Winner (Male or Female)
  • President of DCIII Triathlon Group
  • Granite State Elite Head Lacrosse Coach
  • Amherst Lacrosse Club Head Coach
  • Czech Lacrosse National World Cup Coach
  • Division I All American HM Lacrosse Player & Bucknell University Record holder
  • Olympic Torchbearer – Salt Lake City Winter Olympics

About Leslie

I grew up in Villanova, PA and have lived in Vienna AUS, Prague CZ, Manchester UK, Phoenix AZ and have spent the last 10 years in Southern NH. I swam competitively until I was 12 and then focused on field hockey, lacrosse, skiing, and other sports but it was the swimming that led me to be the “swimmer” for a triathlon relay team in the Bud Light Series, back in the 1980s… I completed my first Sprint at the age of 12! I spent the next 12 years focusing on lacrosse, culminating my playing time as a 4 year Division I starter and beginning my coaching career as the Head Coach of the Czech National Women’s Lacrosse Team for the 1993 World Cup. Coaching became my passion from that point forward.

My adult triathlon career started in 2006 after my 2nd daughter was born and I needed to cross train! After 11 Half Ironman races, several short course races and 4 marathons, I was forced to take a 2 year hiatus from all training to recover from a car accident and subsequent brain surgery in 2011. In 2013, refusing to end my career without having accomplished my dream of doing an Ironman, I came back and completed Ironman Mont Tremblant. In 11 hours and 52 minutes my
dream came true, landing 17th in my age group. Mission accomplished.

Over the last 8 years I have been helping triathletes get faster by dialing in their overall and race day nutrition. In February of 2013, I committed to take that coaching to the next level and began my certification for USAT Level I Coach and in May I will complete my Road Runners Club of America Coaching Certification as well.

Currently coaching athletes from PA to NH, I look forward to combining my efforts and business with Peak Triathlon to deliver personalized 1v1 Triathlon and Nutrition Coaching to our athletes.

Read Coach Leslie’s client testimonials.

Stacy Sweetser

Swim Coach

Coaching Credentials

  • USA Swimming Certified Coach
  • Masters Swimming Level II Certified Coach
  • USA Triathlon Team USA: 2013, 2014
  • U.S. Masters Swimming All American
  • Numerous Top Ten U.S. Masters Swims
  • New England Masters Swimming Record Holder
  • NCAA Division I Scholarship Swimmer
  • NCAA Division I All American
  • Owner/Coach: SweetWater Swim Studio

About Stacy

I can remember having a blast racing down the lane at my first swim meet as an 8yr old girl. Despite having the form of the Tazmanian Devil, from that moment on I was in love with swimming.

Growing up in the Northern Virginia area, I was fortunate to play many different sports. Somewhere near the middle of High School, I decided swimming was my passion and I became a single sport athlete.

I swam four years at Providence College, a NCAA Division I school. I enjoyed pushing myself through rigorous training and racing at the Big East

After a short break from swimming, I got back in the pool and managed some respectable times in my specialty sprint events. I heard about the 4.4mile Chesapeake Bay swim and thought that would be an awesome challenge for a pool sprinter! I swam the Chesapeake Bay 4.4mi swim in 2002 and 2003. Once I hit the Bay, I knew I loved swimming in the open water.

Having some experience with open water swimming, I was intrigued by triathlon. I knew I’d enjoy the swim, and the bike and run would be a new challenge. I have been participating in triathlon regularly since 2010. I continue to learn and have more fun each year. Friends, family and the tri-community
have been a large part of this enjoyment!

I currently enjoy coaching swimmers and triathletes of all levels.