Coach, Endurance Program


1 hour session: $90 (CrossFit session, run session, swim session)
1/2 hour session: $50
Private Endurance Coaching: $300/month

Kirk Warner came to Boulder from Marin County, California, to attend the University of Colorado at Boulder where he graduated with a BA in Integrative Physiology and a Minor in Business Administration in the Spring of 2014.

Throughout High School Kirk played many sports, but focused on his career as a competitive triathlete on the Junior Elite circuit for both USA Triathlon (USAT) and the International Triathlon Union (ITU). During his triathlon career, Kirk simultaneously found CrossFit in 2007 and trained at TJ’s Gym in Mill Valley, California. He attributes a great deal of his endurance racing success to his adoption of CrossFit and has a passion for helping others find similar success in endurance racing through CrossFit.

Kirk also has a profound interest in running mechanics and was an early adopter of CrossFit Endurance mentalities for both endurance training and running form. His time at Roots has included developing his athletes running form and performance in the CrossFit Endurance program.

Coaching Credentials

  • CrossFit Level 2 Trainer (CF-L2)
  • CrossFit Endurance Trainer
  • CrossFit Endurance Cycling


Marin County, CA


  • University of Colorado – BA Integrative Physiology
  • Minor Business Administration

Athletic Background

  • Football
  • Baseball
  • Triathlon
  • Now enjoys mountain biking, running, and backcountry hiking.

Contact Kirk: