Cook County

Running Calendar near Cook County 2026-2027

Monthly updates for Cook County

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

Explore the top running races near Cook County for 2026-2027! We've gathered 261 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons

August 2026

Aug

Parkie’s 5K

Bolingbrook | 19 mi from Cook County

5 km

Aug

Two Brothers Tap House Run

Warrenville | 25 mi from Cook County

5 km

Aug

22-23

Sa - Su

Supertri Chicago

Diversey Harbor | 13 mi from Cook County

Triathlon Super sprint 0.23 6.2 1.5 mi Sprint 0.47 15 3.1 mi Olympic 1.5 40 10 km Triple Challenge 1.63 46.3 10.85 mi

Aug

SMG 5K Race

Downers Grove | 16 mi from Cook County

5 km

Aug

St. Monica Summerfest 5K Run/Walk

Harwood Heights | 16 mi from Cook County

5 km

Monthly updates for Cook County

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

Aug

Race for a Ride

Diversey Harbor | 13 mi from Cook County

5 km

Aug

Hurtom Run 5K - Chicago

Elk Grove Village | 23 mi from Cook County

5 km

Aug

Solidarity Sidekick Down Route 66 - Stop 1 Chicago

Chicago | 10 mi from Cook County

7 km

Solidarity Sidekick Down Route 66 - Stop 1 Chicago

Chicago hosts the kickoff 6.6K of the Solidarity Sidekick Down Route 66 series on Aug 29 with a free Kids Dash for ages 3 to 12 and a virtual option through Oct 1.