Check out our club sponsored Triathlon Clubs!
Programs/Activities: Triathlon Training
Flatiron Athletic Club and Boulder, Colorado is the training center of the triathlon world! FAC proudly promotes training with some of the all-time best competitors in the field. Join Dave Scott, 6-time Hawaiian Ironman Champion, for triathlon swim training classes at FAC. His swimming classes held at the club are included in your membership. Simon Lessing, 5-time World Triathlon Champion, leads indoor trainer cycling classes for those who want to maintain that peak performance training year-round. Wolfgang Dittrich, German Triathlon Champion, coaches master swim classes 8 times per week. Colleen De Reuck, 4-time Olympian and world record holder, joins her husband Darren, to teach Runners Plyometric classes.
Some of the current, or most recent triathletes, training at Flatiron Athletic Club include Craig Alexander (current Hawaiian Ironman World Champion), Chrissy Wellington (current womens’ Hawaiian Ironman World Champion), Matt Reed (U.S. Olympian and National Champion), Joanna Zeiger (Ironman Champion and 70.3 World Champion), Michael and Amanda Lovato (triathlon champions), as well as Brad Seng, Tim O’Donnell, Brooke Davison and many of the top age-group triathletes.
We offer 20 swim training classes per week from Sunday through Friday. All of these classes are held in the outdoor 25-meter pool, which is heated year round to between 80 and 81°, and comfortably accommodates many swimmers in our 7-foot-wide lanes. All of these classes are offered free to our members as part of their membership. Non-members can pay a daily fee to train with any of our world-class coaches as well; please see our membership department for details.
Current classes with some of these former world champions include:
Swim Training with Dave Scott
- Tuesdays and Thursdays at 11:15am, 75-minute class (outdoor pool year round)
Swim Training with Wolfgang Dittrich
- Mondays and Wednesdays at 7:00am, Tuesdays at 6:00am, 75-minute class (outdoor pool year round)
- Tuesdays and Fridays at 12:30pm, 60-minute class (outdoor pool year round)
- Mondays, Wednesdays and Fridays at 6:00pm, 60-minute class (outdoor pool year round)
Indoor Trainer Cycling with Simon Lessing
- Mondays at 7:00am and Fridays at 6:30am, 75-minute class, resumes Nov. 1st
Runners Plyometrics with Colleen and Darren De Reuck
- Thursdays at 6:00pm, 60-minute class
All of these classes are offered free to our members as part of their membership. Non-members can pay a daily fee to train with any of these world-class coaches as well (see our membership department for details).
These coaches support their athletes with their own coaching programs and can be reached through:

Dave Scott
davescottinc.com
Simon Lessing and the De Reucks’
bouldercoaching.com

