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Triathlon Calendar near East Dundee 2025-2026

Explore the top triathlons near East Dundee for 2025-2026! We've gathered 43 exciting races in the area. Check out our detailed list below to find your next local race.

September 2025
Sep
13
Saturday

Friends of the Poor Walk and Run

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
Sep
28
Sunday

Lester Fun Run

5 km
October 2025
Oct
4
Saturday

Scarecrow Scramble

5 km
Oct
4
Saturday

Long Grove's Prairie State Half Marathon

5 km 10 km 13 mi
Oct
5
Sunday

Cheesy Pretzel 5K

5 km
Oct
18
Saturday

Spooky Sprint - Chicago

5 km 10 km 13 mi
Oct
19
Sunday

Naperville Half Marathon

5 km 10 km 13 mi
Oct
26
Sunday

Sycamore Pumpkin 10k Run

10 km
November 2025
Nov
27
Thursday

The Fox & The Turkey Races

4 mi
December 2025
Dec
6
Saturday

Arctic Frog Run - Libertyville, IL

Trail Run 5 km 10 km ... 25 km 50 km
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