St. Louis
Triathlon Calendar near St. Louis 2025-2026
Explore the top triathlons near St. Louis for 2025-2026! We've gathered 3 exciting races in the area. Check out our detailed list below to find your next local race.
June 2026
Race Creve Coeur Park on June 28, 2026 with sprint and Olympic triathlon plus duathlon and aquabike options for all abilities. Enjoy race swag and a lively post race festival with food and music while supporting the Wounded Warrior Project.
July 2026
Tackle a fast, family friendly sprint triathlon in Ballwin with a 300 yard pool swim, 9 mile bike and 3.4 mile run. Options include relays, a buddy division and a Double Triathlon for athletes seeking an extra challenge.
August 2026
Join the 370 Lakeside Triathlon on August 23, 2026 at 370 Lakeside Park in Saint Peters, MO for a beach start and scenic bike and run routes. Events range from super sprint to half distance and include a swim clinic the day before.