Our extensive triathlon training content includes tips for athletes of all levels (from newbie to seasoned pro), training plans for every distance (from super-sprint to Ironman), and advice from the true experts in the sport.

Want to transform your triathlon knowledge, training, and performance? Check out 10 Weeks to Your Best 70.3—a complete training program led by top endurance coach Jim Vance—free with Outside+ membership!

Do Something Streak, Day 19: Choose Your Own Treadmill Adventure

Maximize your time on the running machine with one of these 10 treadmill workouts that’ll get you buzzing mentally and physically.