370 Lakeside Triathlon

Join us for the 5th annual USA Triathlon sanctioned 370 Lakeside Triathlon! This race begins with a beautiful beach start at 370 Lakeside Park. Enjoy the lake swim, scenic fast bike course on the country roads of St. Charles County and finish your race with a run on the flat park trails. We offer a variety of race options from a 5k run, super sprint or sprint for newbies, up to half distance!
​MANY race options to choose from:
5K Run/Walk
Super Sprint Triathlon
300m swim / 23k bike / 2 mile run
Sprint Triathlon
750m swim / 23k bike / 5k run
Sprint Collegiate Triathlon
750m swim / 23k bike / 5k run
Sprint High School Triathlon
750m swim / 23k bike / 5k run
Sprint Aquabike
​750m swim / 23k bike
Sprint Duathlon
2 mile run / 23k bike / 5k run
*NEW* - Sprint Aquathlon
750m swim / 5k run
Sprint Relay​​
750m swim / 23k bike / 5k run
Sprint Paratriathlon
750m swim / 23km bike / 5km run
Sprint Paratriathlon Relay
750m swim / 23km bike / 5km run
Olympic Triathlon
​​1.5k swim / 40k bike / 10k run
Olympic Aquabike
1.5k swim / 40k bike
Olympic Duathlon​​
5k run / 40k bike / 10k run
*NEW* - Olympic Aquathlon
1.5k swim / 10k run
Olympic Relay​​
1.5k swim / 40k bike / 10k run
Half Triathlon
​​1.2 mile swim / 56 mile bike /13.1 mile run
Half Aquabike​​
1.2 mile swim / 56 mile bike
Half Duathlon​​
5k Run / 56 mile bike / 13.1 mile run
*NEW* - Half Aquathlon
1.2 mile swim / 13.1 mile run
Half Relay
​​1.2 mile swim / 56 mile bike /13.1 mile run
REGISTER, find more info, agenda, maps, updates, etc:
https://www.mseracing.com/370-lakeside-triathlon