Trail running Race Calendar in Illinois, United States

The Next Loop Endurance Series | Half Day Forest Preserve

Vernon Hills, Illinois, United States

29 Aug, 2026 (Sat)

$90.00

Trail running

5K

Big Horse Vineyards 5K

Lewistown, Illinois, United States

30 Aug, 2026 (Sun)

$20.00 - $44.00

Trail running, Running

5K 1.6K +1

Hobo Trail Runs 10k-25k-50k

Rockford, Illinois, United States

11 Sep, 2026 (Fri) – 13 Sep, 2026

$30.00 - $130.00

Trail running

Ultra 10K 25K +6

The Last Boyscout

Goreville, Illinois, United States

12 Sep, 2026 (Sat)

$95.00

Trail running, Running

6.7K +27

Tiger 10 Miler - 9th Annual Trail Race Presented by Byron Bank

Byron, Illinois, United States

19 Sep, 2026 (Sat)

$60.00

Trail running

16.1K

Autumn Leaf Run

Freeport, Illinois, United States

03 Oct, 2026 (Sat)

$25.00

Trail running

5K

Haunted Highlander Assault Trail Run

Pingree Grove, Illinois, United States

23 Oct, 2026 (Fri)

$70.00

Trail running

5K +13

Allerton Park Trail Run

Monticello, Illinois, United States

25 Oct, 2026 (Sun)

$35.00

Trail running, Walking, Running

9.2K 3.2K

The Forge Trail Run Festival

Lemont, Illinois, United States

14 Nov, 2026 (Sat)

$62.50 - $100.00

Trail running

10K Half-Marathon 29.9K Ultra

Da Deer Run Run

Hudson, Illinois, United States

05 Dec, 2026 (Sat)

$15.00 - $30.00

Trail running

8K 4K

Pere Marquette Endurance Trail Run

Grafton, Illinois, United States

12 Dec, 2026 (Sat)

$55.00

Trail running

12.6K

Muddy Shamrock @ The Forge

Lemont, Illinois, United States

13 Mar, 2027 (Sat)

$45.00 - $60.00

Trail running

Half-Marathon 10.5K