Illinois close

Illinois Trail Running Calendar 2025-2026

Header image
Monthly updates for Illinois

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

Explore the best trail runs in Illinois for 2025-2026! Our updated list features 50 exciting races across the region. Find your next race in Illinois below and join the running community at these great events!

April 2026
Apr
11-12
Sa - Su

Allerton Races

Trail Run 5 km 10 km Half Marathon
Apr
18
Sa

Earth Day 50k

Trail Run 5 mi 15 mi 50 km
Apr
18
Sa

Loud Thunder 50

Trail Run 13 mi 50 km 50 mi
Apr
25
Sa

Childish Nonsense

Trail Run 10 km 25 km 50 km 50 mi
Apr
25
Sa

Saw Wee Kee - Spring Trail Run

Trail Run
May 2026
May
3
Su

Great Western Half-Marathon & 10K

Trail Run 10 km Half Marathon
May
9
Sa

F^3 Cap Sauers Trail Marathon

Trail Run
May
30
Sa

Lincoln Memorial Garden Trail Race

Trail Run 8 km
May
30
Sa

Red Cedar Trail Races at Giant City State Park

Trail Run 5 km Half Marathon 40 km
June 2026
Jun
6
Sa

Saw Wee Kee - Summer Trail Run

Trail Run
Jun
6
Sa

5k for Double "J"

Trail Run 5 km
Jun
13
Sa

Lake Mingo Trail Run

Trail Run 7 mi
Jun
20
Sa

Gifts of Love Community 5K

Trail Run 5 km 4 mi
July 2026
Jul
17
Fr

Cross Country Sundown Showdown

Trail Run 5 km
Jul
25
Sa

Madder Than a Wet Hen

Trail Run 5 km
August 2026
Aug
22-23
Sa - Su

Shawnee Hills Trail Races

Trail Run 13 mi 50 km 100 km 100 mi
September 2026
Sep
5
Sa

Temptation 200 Ultras

Trail Run 10 km 50 km 200 km
Sep
5
Sa

Gristmill Grind 10K

Trail Run 5 km 10 km
Sep
12
Sa

Wild Wild Wilderness

Trail Run 5 km 7 mi
Sep
12
Sa

Sand Creek Trail Run

Trail Run 4 mi 7 mi