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About OnTrack Fitness

OnTrack Fitness is not a gym, it's a mobile fitness community. We meet with students in person in beautiful locations around Honolulu, Hawaii and offer online training all over the world. 

OnTrack Fitness has a passion for guiding people to reach their goals. We work hard to create a safe environment for you to flourish. We can train you whether you just want to try something new for your personal fitness, attempt a 5K, or even train for a marathon or Ironman competition! Our group sessions focus on "true beginners." We are a friendly, low-pressure community. You will feel at home!   

OnTrack Fitness started over 16 years ago on the mainland. We're not a chain; we're a family-owned business that provides the highest quality customer service. We're looking forward to helping you reach your goals, build a healthy lifestyle and grow in confidence through fitness!




OnTrack Fitness swim team on the beach in Hawaii

About Our Trainers

Emily Collins, Owner and Trainer

Passion for fitness instruction began early in life for Emily. She became an instructor in high school and trained in a variety of gyms, but couldn't find a truly client-focused program. Her dream was to work with people to tailor a plan to their individual needs, goals, and fitness levels. OnTrack Fitness is the fruit of that dream!

As a personal trainer, triathlon coach & sports yoga instructor, Emily keeps up to date with the latest research for her clients. She is completing a degree in Performance and Sports Psychology at Grand Canyon University to help her clients train mentally as well as physically. Emily can train all fitness levels and holds multiple certifications:

  • ACE certified Personal Trainer

  • IRONMAN certified Coach 

  • ITCA certified Triathlon Coach

  • NESTA certified Sports Yoga Instructor

  • ACE Fitness Nutrition Specialist 

  • ISSA Endurance Fitness Trainer

OnTrack Fitness, Matt and Emily Collins, Trainers.

Matt Collins, Trainer


Matt is a certified personal trainer through FiTour. He has a passion for running and triathlon and loves working with athletes of all levels to achieve goals they never thought possible in these sports.

Matt is a 4-hour marathon finisher and an Ironman, having completed the Ironman World Championship in 2018. He has participated in three 70.3 Ironman competitions, numerous sprint and Olympic distance triathlons, and a variety of running distances. 


Matt and Emily have both been age group winners in races from 5Ks to triathlons. They often work together coaching OnTrack Fitness group programs to provide the most balanced and expert training possible.


You can find Emily and Matt on

Triathlon coaching in Honolulu & online
OnTrack Fitness, Honolulu, Hawaii
What some happy clients say:  
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