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Triathlon Calendar near Sycamore 2025-2026

Explore the top triathlons near Sycamore for 2025-2026! We've gathered 7 exciting races in the area. Check out our detailed list below to find your next local race.

June 2025
Jun
22
Sunday

Ironman 70.3 Rockford Illinois

Triathlon
Jun
28
Saturday

Hoffman Estates Stars and Stripes Half Marathon

5 km 10 km 13 mi
Jun
28
Saturday

Belvidere Heritage Days 5K

5 km
July 2025
Jul
4
Friday

Warrenville Park District Firecracker 5K

5 km
Jul
4
Friday

Lifescape 4th of July Classic Run

2 mi 8 km
Jul
6
Sunday

All American 8 Mile - Greater Chicago

4 mi 8 mi
Jul
19
Saturday

Run for the Dogs 5k

5 km
Jul
20
Sunday

Crystal Lake Aquathon

Aquathlon
August 2025
Aug
10
Sunday

Coon Creek Classic

10 km
Aug
10
Sunday

Summer Sizzler - Greater Chicago

5 km 10 km 15 km
Aug
16
Saturday

RAMP River Run – 1/2 Marathon

3 km 5 km 13 mi
Aug
23-24
Sa - Su

Tough Mudder - Chicago

Obstacle Run 5 km 15 km
Aug
30
Saturday

Warrior 5k

5 km
September 2025
Sep
6
Saturday

Last Chance BQ.2 Marathon

26 mi
Sep
21
Sunday

Fox Valley Marathon Races

5 km 13 mi 20 mi 26 mi
Sep
28
Sunday

DeKalb Corn Classic

5 km 10 km
October 2025
Oct
26
Sunday

Sycamore Pumpkin 10k Run

10 km
November 2025
Nov
27
Thursday

The Fox & The Turkey Races

4 mi
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