370 Lakeside Triathlon

  • Date Sun 24th August 2025
  • Location Saint Peters, Missouri
  • Price $33.53 - $300.40
  • Races 22 races
  • Distances Sprint, Olympic, 5km

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370 Lakeside Triathlon

Sun 24th August 2025

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Event summary

Get ready for an exhilarating day of athleticism at the 5th annual 370 Lakeside Triathlon on Sunday, August 24th, 2025! Set in the stunning 370 Lakeside Park in St. Peters, St. Charles, this USAT sanctioned event promises a flat and fast course that is perfect for both seasoned triathletes and newcomers alike. Participants can choose from a variety of race distances, including a 5K run, super sprint, sprint, and even half distance options. For those interested in alternative formats, duathlon, aquabike, and aquathlon races are also available. Enjoy a picturesque beach start, scenic country roads, and a refreshing run through the beautiful park trails. Whether you're competing or cheering from the sidelines, the 370 Lakeside Triathlon is an event not to be missed! For further details on course maps, event schedules, and volunteer opportunities, be sure to check the official website.

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

Races

  • Super Sprint Individual Tri

    Incl. $9.26 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $124.26

    Book
    300 meter swim 23K bike 2 mile run

  • Sprint Individual Tri

    Incl. $9.94 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $134.94

    Book
    750M swim 23k bike 5k run

  • Sprint Para Tri

    Incl. $7.91 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $102.91

    Book
    750M swim 23k bike 5k run

  • Sprint Collegiate Tri

    Incl. $6.56 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $81.56

    Book
    750 meter swim 23K bike 5k run

  • Sprint High School Tri

    Incl. $6.56 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $81.56

    Book
    750 meter swim 23K bike 5k run

  • Sprint Para My Team Triumph

    Incl. $7.91 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $102.91

    Book
    750M Swim 23k Bike 3.1 mile run

  • Sprint Aquathlon

    Incl. $9.26 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $124.26

    Book
    Swim 750m Run 5K

  • Sprint Aquabike

    Incl. $9.26 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $124.26

    Book
    750M swim 23k bike

  • Sprint Duathlon

    Incl. $9.26 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $124.26

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

  • Sprint Relay Tri

    Incl. $14.66 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $209.66

    Book
    750M swim 23k bike 5k run

  • Sprint Para Relay Tri

    Incl. $14.66 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $209.66

    Book
    750M swim 23k bike 5k run

  • Olympic Individual Tri

    Incl. $10.61 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $145.61

    Book
    Swim 1.5k Bike 40k Run 10k

  • Olympic Aquabike

    Incl. $9.94 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $134.94

    Book
    Swim 1.5k Bike 40k

  • Olympic Duathlon

    Incl. $9.94 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $134.94

    Book
    5k Run | 40k Bike | 10k Run

  • Olympic Aquathlon

    Incl. $9.94 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $134.94

    Book
    Swim 1500m Run 10K

  • Olympic Relay Tri

    Incl. $15.68 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $225.68

    Book
    Swim 1.5k Bike 40k Run 10k

  • Half Individual Tri

    Incl. $15.00 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $215.00

    Book
    1.2 mile swim 56 mile bike 13.1 mile run

  • Half Aquabike

    Incl. $12.64 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $177.64

    Book
    Swim 1.2 mile Bike 56 mile

  • Half Duathlon

    Incl. $12.64 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $177.64

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

  • Half Aquathlon

    Incl. $12.64 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $177.64

    Book
    Swim 1.2 miles Run 13.1 miles

  • Half Relay Tri

    Incl. $20.40 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $300.40

    Book
    1.2 mile swim 56 mile bike 13.1 mile run

  • 5k Run

    Incl. $3.53 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $33.53

    Book

Book

  • Super Sprint Individual Tri

    Incl. $9.26 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $124.26

    Book
    300 meter swim 23K bike 2 mile run

  • Sprint Individual Tri

    Incl. $9.94 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $134.94

    Book
    750M swim 23k bike 5k run

  • Sprint Para Tri

    Incl. $7.91 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $102.91

    Book
    750M swim 23k bike 5k run

  • Sprint Collegiate Tri

    Incl. $6.56 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $81.56

    Book
    750 meter swim 23K bike 5k run

  • Sprint High School Tri

    Incl. $6.56 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $81.56

    Book
    750 meter swim 23K bike 5k run

  • Sprint Para My Team Triumph

    Incl. $7.91 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $102.91

    Book
    750M Swim 23k Bike 3.1 mile run

  • Sprint Aquathlon

    Incl. $9.26 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $124.26

    Book
    Swim 750m Run 5K

  • Sprint Aquabike

    Incl. $9.26 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $124.26

    Book
    750M swim 23k bike

  • Sprint Duathlon

    Incl. $9.26 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $124.26

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

  • Sprint Relay Tri

    Incl. $14.66 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $209.66

    Book
    750M swim 23k bike 5k run

  • Sprint Para Relay Tri

    Incl. $14.66 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $209.66

    Book
    750M swim 23k bike 5k run

  • Olympic Individual Tri

    Incl. $10.61 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $145.61

    Book
    Swim 1.5k Bike 40k Run 10k

  • Olympic Aquabike

    Incl. $9.94 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $134.94

    Book
    Swim 1.5k Bike 40k

  • Olympic Duathlon

    Incl. $9.94 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $134.94

    Book
    5k Run | 40k Bike | 10k Run

  • Olympic Aquathlon

    Incl. $9.94 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $134.94

    Book
    Swim 1500m Run 10K

  • Olympic Relay Tri

    Incl. $15.68 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $225.68

    Book
    Swim 1.5k Bike 40k Run 10k

  • Half Individual Tri

    Incl. $15.00 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $215.00

    Book
    1.2 mile swim 56 mile bike 13.1 mile run

  • Half Aquabike

    Incl. $12.64 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $177.64

    Book
    Swim 1.2 mile Bike 56 mile

  • Half Duathlon

    Incl. $12.64 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $177.64

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

  • Half Aquathlon

    Incl. $12.64 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $177.64

    Book
    Swim 1.2 miles Run 13.1 miles

  • Half Relay Tri

    Incl. $20.40 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $300.40

    Book
    1.2 mile swim 56 mile bike 13.1 mile run

  • 5k Run

    Incl. $3.53 Fee & Unisex Long Sleeve Hooded Shirt

    Sun 24th August 2025

    $33.53

    Book

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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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