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Triathlon Calendar near Millstadt 2025-2026

Explore the top triathlons near Millstadt for 2025-2026! We've gathered 31 exciting races in the area. Check out our detailed list below to find your next local race.

June 2025
Jun
29
Sunday

St. Louis Triathlon

Triathlon
July 2025
Jul
19
Saturday

Get Your Butt Kicked @ Route 66

Trail Run 2 mi
Jul
20
Sunday

Ballwin Triathlon

Triathlon
Jul
26
Saturday

Kimmswick 5K

5 km
August 2025
Aug
9
Saturday

Drink MO Beer 10k

5 km 10 km
Aug
9
Saturday

Swifty Fun Run - St. Louis

5 km 10 km 13 mi
Aug
16
Saturday

Feed My Sheep Ministry

5 km
Aug
17
Sunday

Ballwin Days 5K

5 km
Aug
22-24
Fr - Su

St. Paul Strassenlauf

Aug
24
Sunday

Summer Sizzler - St. Louis

5 km 10 km 15 km
September 2025
Sep
6
Saturday

Northside Trap Run

5 km
Sep
6
Saturday

CiderMan Triathlon

Triathlon
Sep
14
Sunday

Millstadt Parks Biathlon

Duathlon
Sep
27
Saturday

Belleville Main Street Marathon

13 mi 26 mi
October 2025
Oct
11
Saturday

Harvest Moon Run

5 km
Oct
18-19
Sa - Su

The Great St. Louis Halloween Race

5 km 10 km 13 mi
Oct
18
Saturday

Minnie Ha Ha 12 Hour Run

Backyard Ultra 6 hr 12 hr
Oct
24
Friday

Moonlight Howl 5K

5 km
Oct
25
Saturday

Hot Cider Hustle - St. Louis

5 km 10 km
November 2025
Nov
9
Sunday

Saint Louis Half Marathon

5 km 13 mi
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