370 Lakeside Triathlon

  • Date Sun 17th August 2025
  • Time 6:45AM CDT
  • Location Saint Peters, Missouri
  • Price $44.30 - $353.88
  • Races 23 races
  • Distances Sprint, Olympic, 5km

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370 Lakeside Triathlon

Sun 17th August 2025

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Event summary

Get ready for an exhilarating day at the 5th annual 370 Lakeside Triathlon, taking place on Sunday, August 17, 2025, in the scenic St Peters, St Charles. This USAT sanctioned event promises an unforgettable experience with its flat and fast course that begins at the stunning 370 Lakeside Park. Athletes will kick off their race with a refreshing beach start, followed by a ride along picturesque country roads in St. Charles County, and a thrilling run through the park trails.

Whether you're a seasoned competitor or a newcomer, the 370 Lakeside Triathlon has something for everyone! Choose from various race options including a 5K run, super sprint, or sprint for beginners, all the way up to a half-distance triathlon. Additionally, participants can explore duathlon, aquabike, and aquathlon formats. Don't miss out on this fantastic event filled with athletic camaraderie and community spirit! Be sure to bring a photo ID for race packet pickup, and get ready to make unforgettable memories on race day!

Organiser's Description

Join us for the 5th 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.

Races

  • Super Sprint Individual Tri

    Incl. $12.40 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (6:45AM CDT)

    $172.40

    CLOSED
    300 meter swim 23K bike 2 mile run

  • Sprint Individual Tri

    Incl. $13.41 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $188.41

    CLOSED
    750M swim 23k bike 5k run

  • Sprint Para Tri

    Incl. $9.03 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (6:45AM CDT)

    $119.03

    CLOSED
    750M swim 23k bike 5k run

  • Sprint Collegiate Tri

    Incl. $8.01 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $103.01

    CLOSED
    750 meter swim 23K bike 5k run

  • Sprint High School Tri

    Incl. $8.01 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $103.01

    CLOSED
    750 meter swim 23K bike 5k run

  • Sprint Para My Team Triumph

    Incl. $9.36 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (6:45AM CDT)

    $124.36

    CLOSED
    750M Swim 23k Bike 3.1 mile run

  • Sprint Aquathlon

    Incl. $12.40 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $172.40

    CLOSED
    Swim 750m Run 5K

  • Sprint Aquabike

    Incl. $12.40 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $172.40

    CLOSED
    750M swim 23k bike

  • Sprint Duathlon

    Incl. $12.40 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:30AM CDT)

    $172.40

    CLOSED
    2 mile Run | 23k Bike | 5k Run

  • Sprint Relay Tri

    Incl. $18.14 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $263.14

    CLOSED
    750M swim 23k bike 5k run

  • Sprint Para Relay Tri

    Incl. $18.14 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (6:45AM CDT)

    $263.14

    CLOSED
    750M swim 23k bike 5k run

  • Olympic Individual Tri

    Incl. $14.43 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $204.43

    CLOSED
    Swim 1.5k Bike 40k Run 10k

  • Olympic Elite Triathlon

    Incl. $10.38 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $140.38

    CLOSED
    Swim 1.5k Bike 40k Run 10k

  • Olympic Aquabike

    Incl. $13.75 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $193.75

    CLOSED
    Swim 1.5k Bike 40k

  • Olympic Duathlon

    Incl. $13.75 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:30AM CDT)

    $193.75

    CLOSED
    5k Run | 40k Bike | 10k Run

  • Olympic Aquathlon

    Incl. $13.75 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $193.75

    CLOSED
    Swim 1500m Run 10K

  • Olympic Relay Tri

    Incl. $19.15 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $279.15

    CLOSED
    Swim 1.5k Bike 40k Run 10k

  • Half Individual Tri

    Incl. $19.15 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $279.15

    CLOSED
    1.2 mile swim 56 mile bike 13.1 mile run

  • Half Aquabike

    Incl. $15.78 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $225.78

    CLOSED
    Swim 1.2 mile Bike 56 mile

  • Half Duathlon

    Incl. $15.78 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:30AM CDT)

    $225.78

    CLOSED
    5k Run | 56 mile bike | 13.1 mile run

  • Half Aquathlon

    Incl. $15.78 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $225.78

    CLOSED
    Swim 1.2 miles Run 13.1 miles

  • Half Relay Tri

    Incl. $23.88 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $353.88

    CLOSED
    1.2 mile swim 56 mile bike 13.1 mile run

  • 5k Run

    Incl. $4.30 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:30AM CDT)

    $44.30

    CLOSED

Book

  • Super Sprint Individual Tri

    Incl. $12.40 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (6:45AM CDT)

    $172.40

    CLOSED
    300 meter swim 23K bike 2 mile run

  • Sprint Individual Tri

    Incl. $13.41 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $188.41

    CLOSED
    750M swim 23k bike 5k run

  • Sprint Para Tri

    Incl. $9.03 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (6:45AM CDT)

    $119.03

    CLOSED
    750M swim 23k bike 5k run

  • Sprint Collegiate Tri

    Incl. $8.01 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $103.01

    CLOSED
    750 meter swim 23K bike 5k run

  • Sprint High School Tri

    Incl. $8.01 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $103.01

    CLOSED
    750 meter swim 23K bike 5k run

  • Sprint Para My Team Triumph

    Incl. $9.36 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (6:45AM CDT)

    $124.36

    CLOSED
    750M Swim 23k Bike 3.1 mile run

  • Sprint Aquathlon

    Incl. $12.40 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $172.40

    CLOSED
    Swim 750m Run 5K

  • Sprint Aquabike

    Incl. $12.40 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $172.40

    CLOSED
    750M swim 23k bike

  • Sprint Duathlon

    Incl. $12.40 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:30AM CDT)

    $172.40

    CLOSED
    2 mile Run | 23k Bike | 5k Run

  • Sprint Relay Tri

    Incl. $18.14 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $263.14

    CLOSED
    750M swim 23k bike 5k run

  • Sprint Para Relay Tri

    Incl. $18.14 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (6:45AM CDT)

    $263.14

    CLOSED
    750M swim 23k bike 5k run

  • Olympic Individual Tri

    Incl. $14.43 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $204.43

    CLOSED
    Swim 1.5k Bike 40k Run 10k

  • Olympic Elite Triathlon

    Incl. $10.38 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $140.38

    CLOSED
    Swim 1.5k Bike 40k Run 10k

  • Olympic Aquabike

    Incl. $13.75 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $193.75

    CLOSED
    Swim 1.5k Bike 40k

  • Olympic Duathlon

    Incl. $13.75 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:30AM CDT)

    $193.75

    CLOSED
    5k Run | 40k Bike | 10k Run

  • Olympic Aquathlon

    Incl. $13.75 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $193.75

    CLOSED
    Swim 1500m Run 10K

  • Olympic Relay Tri

    Incl. $19.15 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $279.15

    CLOSED
    Swim 1.5k Bike 40k Run 10k

  • Half Individual Tri

    Incl. $19.15 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $279.15

    CLOSED
    1.2 mile swim 56 mile bike 13.1 mile run

  • Half Aquabike

    Incl. $15.78 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $225.78

    CLOSED
    Swim 1.2 mile Bike 56 mile

  • Half Duathlon

    Incl. $15.78 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:30AM CDT)

    $225.78

    CLOSED
    5k Run | 56 mile bike | 13.1 mile run

  • Half Aquathlon

    Incl. $15.78 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $225.78

    CLOSED
    Swim 1.2 miles Run 13.1 miles

  • Half Relay Tri

    Incl. $23.88 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:00AM CDT)

    $353.88

    CLOSED
    1.2 mile swim 56 mile bike 13.1 mile run

  • 5k Run

    Incl. $4.30 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 17th August 2025 (7:30AM CDT)

    $44.30

    CLOSED

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Location

1000 Lakeside Park Drive, Saint Peters, 63376, MO, United States

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370 Lakeside Triathlon

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