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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 372 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
January 2026
Jan
10
Sa

Frozen Gnome

Trail Run 10 km 50 km
Jan
10
Sa

50k Mashup Slam

Trail Run 50 km
Jan
10
Sa

Iceman Series

5 km 10 km ... 18 km Half Marathon
Jan
17
Sa

Chilly Chili 4.37 Mile Run

4 mi
Jan
17
Sa

Tour de Trails - Rockford

Trail Run 3 mi 6 mi 9 mi 12 mi
Jan
24
Sa

The HUB 5K - Marion

5 km
Jan
24
Sa

Fox Valley Winter Challenge Trail Series

Trail Run 5 km
Jan
24
Sa

Frosty 5K - Peoria

5 km
Jan
24
Sa

Iceman Series

5 km 10 km ... 18 km Half Marathon
Jan
24
Sa

Winter Runderland 10K

5 km 10 km
Jan
24
Sa

Zion Frosty 5K

5 km
Jan
24
Sa

Hot Cocoa & Donut Run

3 mi
Jan
31
Sa

F3 Lake Half Marathon

5 km Half Marathon
Jan
31
Sa

Northpointe Wellness Indoor Triathlon Series

Triathlon
Jan
31
Sa

Frozen Tundra 5K

Trail Run 5 km
Jan
31
Sa

Woodstock Groundhog 5k

5 km
Jan
31
Sa

Winterfest 5K Run

2 mi 5 km
February 2026
Feb
1
Su

St. Charles Indoor Triathlon

Triathlon
Feb
7
Sa

Iceman Series

5 km 10 km ... 18 km Half Marathon
Feb
7
Sa

Frozen Oaks 5K

5 km