Coach Kelli is a triathlon, running, cycling and nutrition coach based in Wallingford CT

I help my clients achieve results by:



As your coach I am here to help you achieve your goals and reach your potential by providing an effective training plan, motivation, build your confidence, and teach you how to get the most out of yourself! 


Coach Kelli Montgomery is a Connecticut-based endurance coach with 25 years of coaching experience.  She has also spent many years racing in the pro and age-group ranks as triathlete, XC mountain biker, and cyclocross racer.  She uses her years of experience to help her clients to reach their potential and goals, with an emphasis on a healthy lifestyle.


She has helped clients set personal bests, compete and qualify for Triathlon National & World Championships, and guided new triathletes to finish their first triathlon or Ironman. She has also coached athletes for road triathlon, off-road Xterra, mountain biking, cyclocross, bike centuries/tours, marathon/ultra/road racing, and swimming.

Coach Kelli's Credentials

  • Certified USA Level II Triathlon Coach

  • Certified USA Cycling Level 3 Coach

  • Certified ACSM Certified Exercise Physiologist

  • Precision Nutrition Level 1

  • Wellcoaches Health & Wellness Coach Trained

  • Graduate of Syracuse University

Coach Kelli's Racing Stats
  • Xterra World Champion 2014, 40-44

  • 3rd in Age Group at the Hawaii Ironman World Championship 1997

  • USAT Offroad National Champion 2016 1st female overall

  • 2018 Pro winner of Xterra Costa Rica and 3rd place in the Pan American Xterra Pro Tour

  • 2019 Connecticut Cyclocross State Champion

  • Half Ironman / 70.3 PR of 4 hours 34 minutes

  • 2010 and 2012 Hawaii Ironman World Championship Qualifier & Finisher

Coaching Services

  • Customized triathlon training programs (Ironman, Road, Xterra (off-road triathlons)

  • Swim video analysis and coaching 

  • Customized Coaching for runners & cyclists (xc mountain bike, cyclocross, road, and gravel)

  • Sports & General Nutrition



Wallingford CT

Tel: 203-314-8650


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Performance and Lifestyle Nutrition Coaching

Coach Kelli can help you to improve your nutrition for healthier lifestyle and/or work to maximize your nutrition for athletic performance.  She will guide you in creating sustainable, healthy eating habits and keep you on track to reach your goals!


She will create a custom nutrition plan based on your goals whether you are looking to improve your nutrition for healthier lifestyle, get leaner for performance, optimize nutrition strategies to improve recovery, training and racing, or gear your plan for your own personal lifestyle/nutrition goals.  She emphasizes eating real foods that are nutrient dense in easy to follow plan.

Training/Race Day Fuel Plan

Planning to do Ironman, ultra, marathon or long endurance event?  Its imperative you have a solid race day fueling plan to ensure success in your event.  And make sure you are fueling properly during all that hard training!


Coach Kelli will help devise a plan that will work for you to properly fuel and hydrate during training and on race day.  This can make all the difference in faster recovery and successful day on the race course

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