1 aquathlon event in Saint Peters, Missouri
From big races to Saturday morning group runs—find aquathlon events and connect with the local endurance sports community.
Saint Peters
1 event in Saint Peters-
Sun, Aug 23, 2026 at 6:45 AMSee full details
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.
Local Clubs & Organizations
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Club
USA Swimming Club. 254 members.
[email protected] +1 636-688-1512 -
Club
USA Swimming Club. 12 members.
[email protected] +1 636-928-1928