370 Lakeside Triathlon

1000 Lakeside Park Drive
Saint Peters, MO 63376


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Event Description

Join us for the second annual 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 and beyond. We offer a variety of race options from super sprint or sprint for newbies, up to half iron distance! And this is a USAT Sanctioned Event.

Distances  / Race Options:
Super Sprint Triathlon
300 meter swim/10 mile bike/2 mile run
Sprint Triathlon
750M swim | 20k bike | 5k run

Sprint Aquabike (no run)
750M swim | 20k bike

Sprint Duathlon (NEW!)
3k Run | 20k Bike | 5k Run
Sprint Relay
Sprint Paratriathlon
Olympic Distance Triathlon
Swim 1.5k | Bike 40k | Run 10k

Olympic Duathlon (NEW!)
5k Run | 40k Bike | 10k Run
Olympic Relay

Half Distance Triathlon
1.2 mile swim | 56 mile bike | 13.1 mile run

Half Distance Aquabike
1.2 mile swim | 56 mile bike 

Half Distance Duathlon
5k Run | 56 mile bike | 13.1 mile run

And join us on Saturday, August 27th at the 370 Lakeside Park under the main pavilion for a HUGE outdoor expo, packet pick up, and pre-race course talks.

The race weekend schedule:

370 Lakeside Triathlon – Expo and Race Day Schedule

Saturday, August 27 – Endurance Expo | Packet Pick Up | Bike Drop Off

·      We need ALL athletes to pick up your packet today and encourage you drop off your bike today instead of race day!

·      You CANNOT pick up someone else’s packet.

·      BRING: USAT Card, Driver's License

·      Allow time for mandatory open water swim talk with BYLG Sport, hourly options.

·      Allow time to check out vendor tables.

10am – Expo Opens


·      Packet Pick Up – NO RACE DAY PICK UP!

·      Bike Drop Off – you can leave your bike in transition; we will have security all night to keep it safe. Leave gear at home, that comes with you race morning.

·      Hourly open water talk with BYLG Sport, our lifeguard company. – MANDATORY (11:30am, 12:30pm, 1:30pm, 2:30pm).

·      Course and race day Q&A with Race Director, Sally Drake.

·      Allow time to browse vendor booths.

Sunday, August 28th – RACE DAY

4:30am – Transition Opens – check in bike (if you did not on Saturday) and gear. Athletes only in the transition area, we will check your wrist band that you will find in your packet.

6:30am – Transition Closes – you will NOT be allowed back in.

6:20am – Swim warm up

6:30am – Athletes line up to start

6:45am – Para-athletes start

7am – Wave starts begin! 


·      Water, Heed Electrolyte Drink and Hammer Gel on the bike and run.


  • BBQ, refreshments, and live music under the pavilion! Invite family and friends! 

Event Location & Accomodations

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