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Illinois Running Calendar 2025-2026

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Explore the best running races in Illinois for 2025-2026! Our updated list features 316 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!

Half Marathons Marathons Trail Runs Triathlons
May 2026
May
23
Saturday

Goose Creek Classic

5 km 10 km
May
24
Sunday

Race to the Flag

5 km
May
25
Monday

Nina LeCuyer Memorial

5 km
May
30
Saturday

Elsa Chicken Plucker Backyard Ultra

Backyard Ultra 4 mi
May
30
Saturday

Lincoln Memorial Garden Trail Race

Trail Run 8 km
May
31
Sunday

North Shore Classic

5 km Half Marathon
May
31
Sunday

George W. Buck Boys & Girls Club of Joliet 5K Run/Walk

5 km
June 2026
Jun
5-7
Fr - Su

Harvard Milk Days

Jun
6
Saturday

Steamboat Classic

4 mi 15 km
Jun
6
Saturday

Lake Mingo Trail Run

Trail Run 7 mi
Jun
6
Saturday

Tri-Shark Classic

Triathlon
Jun
14
Sunday

Ironman 70.3 Rockford Illinois

Triathlon
Jun
20
Saturday

1911 Initiative 5k Scholarship Run/Walk

5 km
Jun
20
Saturday

Love's Fox Trot 5K

5 km
Jun
25
Thursday

DECU Glow Run

5 km
Jun
27
Saturday

Miles for Maddog

5 km 10 km
Jun
27
Saturday

Pretzel City 5k

5 km
Jun
27
Saturday

Tremont Triathlon

Triathlon
Jun
27
Saturday

Run the Runway - Wheeling

5 km
July 2026
Jul
4
Saturday

Warrenville Park District Firecracker 5K

5 km
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