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Illinois Running Calendar 2025-2026

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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 2025-2026! Our updated list features 286 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
April 2026
Apr
23-25
Th - Sa

Illinois Race Weekend

5 km 10 km Half Marathon Marathon
Apr
23
Th

SBM Stride for Science

5 km
Apr
25
Sa

Childish Nonsense

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

Arny Johnson 10 Mile

5 km 10 mi
Apr
25
Sa

Saw Wee Kee - Spring Trail Run

Trail Run
Apr
25
Sa

Nauvoo Marathon

2 mi 26 mi
Apr
25
Sa

5K Run for Mental Health and Wellness

5 km
Apr
25
Sa

Valerie Stevens 10k Memorial Scholarship Run/Walk

5 km 10 km
Apr
26
Su

Ravenswood Run

5 km
Apr
26
Su

Good Life Race

5 km
May 2026
May
2
Sa

Fight Hunger 10K

5 km 10 km
May
2
Sa

The Lake Run

3 mi 4 mi 12 km
May
2
Sa

Kirby Derby

5 km 10 km
May
2
Sa

Annual Law Day 5K

5 km
May
2
Sa

Dark Ages Night Obstacle Race

Obstacle Run 5 km
May
2
Sa

Empower Run 5k

5 km
May
2
Sa

Mattea's Joy SuperHero 5K

2 mi 5 km
May
2
Sa

Miles for Smiles 5K - McHenry

5 km
May
2
Sa

HOH 5K Run/Walk

5 km
May
3
Su

Chicagoland Spring Marathon

10 km Half Marathon Marathon