Running Races in Oak Brook, Illinois 2026 | Browse All Races

There are 4 running races in Oak Brook, Illinois in 2026. The next is the CAI - Illinois Family 5k on October 10. Distances include 5K races.

Sat, Oct 10 · Oak Brook, IL Oak Brook

Road 5k

From $70 Closed

Sun, Nov 22 · Oak Brook, IL Oak Brook

Triathlon Turkey Dri Tri Oak Brook Park District

From $20 Closed 40 spots left

Sat, May 8 · Oak Brook, IL Oak Brook

Road Pink 5k Oak Brook Park DistrictPink 5k Oak Brook Park District

From $25 Closed

Sat, Jun 5 · Oak Brook, IL Oak Brook

Triathlon Tom's Try-athlon Oak Brook Park DistrictTom's Try-athlon Oak Brook Park District

From $25 Closed

Running Races in Oak Brook, Illinois — 2026