Race calendar

Marathon Races in Illinois

10 upcoming Marathon races across Illinois. Run This events are listed first — pick a city below to narrow it down.

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10 races

Fri, Aug 14, 2026

The Next Loop Endurance Series - Busse Woods

Elk Grove Village, IL

OutsideMarathon

Fri, Aug 21, 2026

Comlara 12 Hour Sunrise-Sunset, 6 Hour, 3 Hour and Hour of Power Trail Run

Hudson, IL

Outside51.0 mi25.5 mi12.7 mi4.3 mi

Fri, Aug 28, 2026

The Next Loop Endurance Series | Half Day Forest Preserve

Vernon Hills, IL

OutsideMarathon

Fri, Sep 25, 2026

Belleville Main Street Marathon & Half Marathon

Belleville, IL

OutsideMarathon

Fri, Nov 6, 2026

14th Annual Springfield Marathon & Harvest Wind Half Marathon & 10K

New Berlin, IL

OutsideMarathon10K

Fri, Nov 20, 2026

2026 Turkey Trot

Decatur, IL

Outside5K10KMarathon805 m

Mon, Nov 30, 2026

Santa Hustle Virtual

N/A, IL

OutsideMarathon10K5K1000 m

Fri, Mar 26, 2027

Rend Lake Marathon

Benton, IL

OutsideMarathon6.5 mi

Sat, May 1, 2027

Chicagoland Spring Marathon, Half Marathon & 10K

Schaumburg, IL

OutsideMarathon10K

Fri, May 7, 2027

F^3 Cap Sauers Trail Marathon & 10 Mile

Palos Hills, IL

OutsideMarathon10.0 mi