location_city Saint Peters
location_on Missouri
flag United States
calendar_today 23 Aug, 2026
kayaking Multisports
language Official Website
RegisterJoin 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.
Aug 23, 2026
Distance — SPRINT PARA MY TEAM TRIUMPH
Type — Triathlon
06:45
Aug 23, 2026
Distance — SPRINT PARA TRI
Type — Triathlon
06:45
Aug 23, 2026
Distance — SUPER SPRINT INDIVIDUAL TRI
Type — Triathlon
06:45
Aug 23, 2026
Distance — HALF AQUABIKE
Type — Triathlon
07:00
Aug 23, 2026
Distance — HALF AQUATHLON
Type — Triathlon
07:00
Aug 23, 2026
Distance — HALF INDIVIDUAL TRI
Type — Triathlon
07:00
Aug 23, 2026
Distance — HALF RELAY TRI
Type — Triathlon
07:00
Aug 23, 2026
Distance — OLYMPIC AQUABIKE
Type — Triathlon
07:00
Aug 23, 2026
Distance — OLYMPIC AQUATHLON
Type — Triathlon
07:00
Aug 23, 2026
Distance — OLYMPIC INDIVIDUAL TRI
Type — Triathlon
07:00
Aug 23, 2026
Distance — OLYMPIC RELAY TRI
Type — Triathlon
07:00
Aug 23, 2026
Distance — SPRINT AQUABIKE
Type — Triathlon
07:00
Aug 23, 2026
Distance — SPRINT AQUATHLON
Type — Triathlon
07:00
Aug 23, 2026
Distance — SPRINT COLLEGIATE TRI
Type — Triathlon
07:00
Aug 23, 2026
Distance — SPRINT HIGH SCHOOL TRI
Type — Triathlon
07:00
Aug 23, 2026
Distance — SPRINT INDIVIDUAL TRI
Type — Triathlon
07:00
Aug 23, 2026
Distance — SPRINT RELAY TRI
Type — Triathlon
07:00
Aug 23, 2026
Distance — 5K
Type — Triathlon
07:30
Aug 23, 2026
Distance — HALF DUATHLON
Type — Triathlon
07:30
Aug 23, 2026
Distance — OLYMPIC DUATHLON
Type — Triathlon
07:30
Aug 23, 2026
Distance — SPRINT DUATHLON
Type — Triathlon
07:30
These values represent the 3-year monthly averages for August in Saint Peters.
St. Peters is a city in St. Charles County, Missouri, United States. The population was 57,732 at the 2020 census, making it the tenth-largest city in Missouri. It is a northwestern suburb of St. Louis.
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