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Triathlon Calendar near South Side 2025-2026

Explore the top triathlons near South Side for 2025-2026! We've gathered 99 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
6
Saturday

Rotary Santa Run Walk

5 km
Dec
7
Sunday

Lemont Frigid 5K

5 km
Dec
13
Saturday

The Best Races - Chicago

5 km 10 km 13 mi
Dec
13
Saturday

The Best Races - Evanston

5 km 10 km 13 mi
Dec
20
Saturday

Santa Run & Walk 5K

5 km
Dec
27
Saturday

The Best Races - Chicago

5 km 10 km 13 mi
January 2026
Jan
1
Thursday

Resolution Run - Olympia Fields

6 km
Jan
1
Thursday

Cheers to New Year's 5k

5 km
Jan
31
Saturday

F3 Lake Half Marathon

5 km 13 mi
March 2026
Mar
14
Saturday

Muddy Shamrock @ The Forge

Trail Run 6 mi 13 mi
Mar
15
Sunday

Lucky 7K

7 km
April 2026
Apr
26
Sunday

Ravenswood Run

5 km
May 2026
May
2
Saturday

Fight Hunger 10K

5 km 10 km
May
9
Saturday

F^3 Cap Sauers Trail Marathon

Trail Run 10 mi 26 mi
May
9
Saturday

Quarryman Challenge

5 km 10 mi
May
9
Saturday

Pink 5k

5 km
May
17
Sunday

Chicago Spring Half Marathon

10 km 13 mi
June 2026
Jun
27
Saturday

Miles for Maddog

5 km 10 km
July 2026
Jul
4
Saturday

Warrenville Park District Firecracker 5K

5 km
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