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Triathlon Calendar near Arlington Heights 2025-2026

Explore the top triathlons near Arlington Heights for 2025-2026! We've gathered 16 exciting races in the area. Check out our detailed list below to find your next local race.

September 2025
Sep
5-7
Fr - Su

Disneyland Halloween Half Marathon Weekend

10 km
Sep
20
Saturday

Angel Stadium Spartan Stadion Weekend

Obstacle Run 5 km
Sep
20
Saturday

That's No Moon Ultras

Trail Run 30 km 50 km 50 mi
October 2025
Oct
17
Friday

The Race for a Healthier World 5K

5 km
Oct
19
Sunday

Mission Inn Run

5 km 10 km 13 mi
Oct
31
Friday

Machete Trail Madness 100 Miler

Trail Run 10 mi 50 mi 100 mi
November 2025
Nov
1
Saturday

Beer City Half Marathon

5 km 10 km 13 mi
Nov
23
Sunday

Anaheim Turkey Trot 10K

10 km
Nov
27
Thursday

Plymouth Rock n Run

5 km 10 km
Nov
27
Thursday

Irvine/Orange County Turkey Trot 5K

5 km
Nov
29-30
Sa - Su

Boundiful Endurance Runs

Trail Run 3 hr 6 hr ... 100 mi 24 hr
December 2025
Dec
6
Saturday

Into The Wild Fremont Canyon

Trail Run 28 km
Dec
7
Sunday

Tinsel Triathlon

Triathlon
January 2026
Jan
10
Saturday

Citrus Heritage Run

Jan
24-25
Sa - Su

Socal Spartan Event Weekend

Obstacle Run 5 km 10 km 21 km
November 2026
Nov
26
Thursday

Plymouth Rock n Run

5 km 10 km
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