Triathlon Calendar near Foristell 2026-2027

June 2027

Triathlon Sprint 750 m 22 km Sprint 750 m 22 5 km Olympic 1 mi 43 km Olympic 1 mi 43 10 km

Innsbrook Triathlon on June 12, 2027 at Lionshead Beach offers lake swims, rolling bike routes and mixed-surface runs with USAT-sanctioned race formats.

July 2027

Jul

18

Su

Ballwin Triathlon

Ballwin | 26 mi from Foristell

Triathlon Sprint 300 m 9 3.4 mi Sprint 300 m 9 3.4 mi 1 m 9 3.4 mi

USAT sanctioned triathlon in Ballwin featuring a 300 yard swim, 9 mile bike and 3.4 mile run with single, relay, and double formats on July 18, 2027.

September 2027

Sep

12

Su

370 Lakeside Triathlon

St. Peters | 17 mi from Foristell

Triathlon Duathlon Aquathlon Sprint 750 m 5 km Olympic 1.5 10 km Middle distance 1.2 13.1 mi Sprint 750 m 23 km

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.

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