St. Louis
Triathlon Calendar near St. Louis 2026-2027
Monthly updates for St. Louis
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near St. Louis for 2026-2027! We've gathered 5 exciting races in the area. Check out our detailed list below to find your next local race.
September 2026
Community biathlon and 5K in Millstadt featuring a 5 mile run and 22 mile bike, age and team awards, post-race food and yoga, proceeds to the park fund.
December 2026
An 8 hour off road navigation race around St. Louis combining canoeing, mountain biking and trekking with solo and team divisions.
June 2027
A USAT sanctioned state championship triathlon at Creve Coeur Park on June 28, 2026 featuring sprint and Olympic formats, relays, a 6K run, pre race expo and post race festival with awards and athlete amenities.
July 2027
A USAT sanctioned pool triathlon in Ballwin on July 19, 2026 with 300 yard swim, 9 mile bike and 3.4 mile run plus single, relay and double options.
September 2027
USAT sanctioned triathlon at 370 Lakeside Park offering races from a 5K up to a half distance with a beach swim, country road bike courses and a finish festival.
Monthly updates for St. Louis
Get new running races (and updates) in your inbox every month.