Clayton
Triathlon Calendar near Clayton 2026-2027
Monthly updates for Clayton
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Clayton for 2026-2027! We've gathered 5 exciting races in the area. Check out our detailed list below to find your next local race.
December 2026
An 8 hour off road adventure race near St Louis combining navigation, paddling, biking and running on a secret course with solo and team divisions.
June 2027
St. Louis Triathlon at Creve Coeur Park on June 27, 2027 is a USAT sanctioned state championship offering sprint and Olympic formats, relays, a 6K run, and a finish festival.
July 2027
USAT sanctioned Ballwin Triathlon on July 18 2027 features a 300 yard pool swim, 9 mile bike and 3.4 mile run with single, relay and double options.
August 2027
MTC Zilla Tri in Columbia IL offers sprint and youth short sprint courses with pool swims, road cycling and neighborhood runs under USAT rules.
September 2027
A USAT‑sanctioned triathlon at 370 Lakeside Park offering distances from a 5K and sprints up to a half triathlon, with a beach swim, country‑road bike courses, and a finish festival.
Monthly updates for Clayton
Get new running races (and updates) in your inbox every month.