Events
SUPER SPRINT INDIVIDUAL TRI
SPRINT INDIVIDUAL TRI
SPRINT PARA TRI
4 spots left. Price increases after August 16, 2026 at 11:59pm CDT
SPRINT COLLEGIATE TRI
SPRINT HIGH SCHOOL TRI
SPRINT PARA MY TEAM TRIUMPH
SPRINT AQUATHLON
10 spots left. Price increases after July 9, 2026 at 11:59pm CDT
SPRINT AQUABIKE
SPRINT DUATHLON
SPRINT RELAY TRI
OLYMPIC INDIVIDUAL TRI
OLYMPIC AQUABIKE
OLYMPIC DUATHLON
OLYMPIC AQUATHLON
10 spots left. Price increases after July 9, 2026 at 11:59pm CDT
OLYMPIC RELAY TRI
HALF INDIVIDUAL TRI
HALF AQUABIKE
HALF DUATHLON
HALF AQUATHLON
10 spots left. Price increases after July 9, 2026 at 11:59pm CDT
HALF RELAY TRI
Race Website
Additional race information can be found at https://www.mseracing.com/370-lakeside-tri.html.
Place
Saint Peters, MO US 63376
Description
Join us for the 6th annual USAT sanctioned 370 Lakeside Triathlon! Enjoy the flattest, fastest course starting in beautiful 370 Lakeside Park! Enjoy a beach start, amazing country roads in St. Charles County, and a run that includes the park trails. We offer a variety of race options from a 5k run, super sprint or sprint for newbies, up to half distance along with duathlon, aquabike and aquathlon options!
For more information including course maps, schedule of events, race options, volunteer signup, etc. Please visit - https://www.mseracing.com/370-lakeside-triathlon
All athletes MUST show a Photo ID and pick up their own race packet, NO EXCEPTIONS.
Race Contact Info
Directions
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Race Participant Survey
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