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Triathlon Calendar near Big Oaks 2025-2026

Explore the top triathlons near Big Oaks for 2025-2026! We've gathered 110 exciting races in the area. Check out our detailed list below to find your next local race.

April 2026
Apr
25
Saturday

Childish Nonsense

Trail Run 10 km 25 km 50 km 50 mi
Apr
26
Sunday

Ravenswood Run

5 km
May 2026
May
2
Saturday

Fight Hunger 10K

5 km 10 km
May
9
Saturday

Mother's Day Run/Walk - St. Charles

5 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
May
31
Sunday

North Shore Classic

5 km 13 mi
July 2026
Jul
4
Saturday

Warrenville Park District Firecracker 5K

5 km
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