370 Lakeside Triathlon
The 370 Lakeside Triathlon takes place on Sunday, August 23, 2026, in Saint Peters, MO. This USAT-sanctioned event features a variety of race options to suit different experience levels, from super sprint and sprint triathlons to half-distance triathlons, as well as duathlon, aquabike, and aquathlon options. A 5k run is also available. The race starts in beautiful 370 Lakeside Park and includes a beach start, flat and fast country roads, and park trails.
Events:
- SUPER SPRINT INDIVIDUAL TRI
- SPRINT INDIVIDUAL TRI
- SPRINT PARA TRI
- SPRINT COLLEGIATE TRI
- SPRINT HIGH SCHOOL TRI
- SPRINT PARA MY TEAM TRIUMPH
- SPRINT AQUATHLON
- SPRINT AQUABIKE
- SPRINT DUATHLON
- SPRINT RELAY TRI
- OLYMPIC INDIVIDUAL TRI
- OLYMPIC AQUABIKE
- OLYMPIC DUATHLON
- OLYMPIC AQUATHLON
- OLYMPIC RELAY TRI
- HALF INDIVIDUAL TRI
- HALF AQUABIKE
- HALF DUATHLON
- HALF AQUATHLON
- HALF RELAY TRI
- 5K RUN
For more information, including course maps and schedules, visit https://www.mseracing.com/370-lakeside-triathlon
