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Illinois Running Calendar 2026-2027

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Monthly updates for Illinois

Get new running races (and updates) in your inbox every month.

Explore the best running races in Illinois for 2026-2027! Our updated list features 790 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 Fitness Races
August 2026
Aug
31
Mo

Solidarity Sidekick down Route 66 - Joliet

7 km
September 2026
Sep
1
Tu

Spirits Run for ALS - Wilmington

5 km 7 km
Spirits Run for ALS - Wilmington A community-focused, noncompetitive 6.6K on 09/01/2026 in Wilmington, Illinois, along Route 66 highlighting the Gemini Giant. The event supports ALS awareness and follows sidewalks and marked crosswalks with volunteer wayfinding.
Sep
1-20
Tu - Su

Fun Run and Family Walk

5 km
Sep
1
Tu

Solidarity Sidekick down Route 66 - Wilmington

7 km
Sep
2
We

Solidarity Sidekick down Route 66 - Gardner

7 km
Sep
3
Th

Solidarity Sidekick down Route 66 - Dwight

7 km
Sep
4-6
Fr - Su

The Ultimate Suck

Obstacle Run 10 mi 25 mi 50 mi
Sep
4
Fr

Solidarity Sidekick down Route 66 - Pontiac

2 mi 7 km
Sep
5
Sa

Temptation 200 Ultras

Trail Run 10 km 50 km ... 150 km 200 km
Sep
5
Sa

Gristmill Grind 10K

Trail Run 5 km 10 km
Sep
5
Sa

Naperville Trails Half Marathon

Trail Run 10 km 13 mi
Sep
5
Sa

Eckert's Spiked Apple 5k

5 km
Sep
5
Sa

Warrior Foundation 5K

5 km 10 mi 20 mi 30 mi
Sep
5
Sa

Colchester Duane Beck 5K

5 km
Sep
5
Sa

Charger 10 Mile

6 km 10 mi
Sep
5
Sa

Warren County Prime Beef Festival

5 km
Sep
5
Sa

Solidarity Sidekick down Route 66 - Lexington

2 mi 7 km
Sep
5
Sa

Sweetcorn 5K Classic

5 km
Sep
5-6
Sa - Su

Nauvoo Grape Stomp

5 km
Sep
6
Su

Crystal Lake Half Marathon

12 km 13 mi
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