USA Calendar Illinois Calendar

Frontline OCR

Byron, United States • 23 May 2026

The Frontline OCR will take place in Byron on Saturday 23 May 2026. You can run between 5 and 10 kilometers. Visit the organization's website for the most recent information.

United States Illinois
Always visit the organization's website for the most recent information!

Race information

Website Registration
Heroes 2 - Non-Competitive 10k
Open 10k Waves
Heroes 1 - Competitive 10k
9:45 Am Open 5k

Mud & Obstacle runs nearby

Tough Mudder - Chicago

Rockford - 21 km from Byron • 23-24 Aug 2025

Infinity 5 km 15k

The Tough Mudder - Chicago will take place in Rockford from Saturday 23 August 2025 to Sunday 24 August 2025. You can run between 5 and 15 kilometers.

Midwest OCR

Marseilles - 100 km from Byron • 27 Sep 2025

5 km 10k

The Midwest OCR will take place in Marseilles on Saturday 27 September 2025. You can run between 5 and 10 kilometers.

Abominable Snow Race

Lake Geneva - 85 km from Byron • 31 Jan 2026

1/4 - 1/2 Mile | 7+ Obstacles - Lil Yeti's Course 5k | 15+ Obstacles - Fun Run 10k | 25+ Obstacles - Elite/ag 20k | 50+ Obstacles - Fun Run

The Abominable Snow Race will take place in Lake Geneva on Saturday 31 January 2026. You can run between 5 and 20 kilometers.

Savage Race - Chicago

Spring Grove - 91 km from Byron • 11 Jul 2026

Saturday Only 15-20 Obstacles 3+ Miles Register For Savage Blitz Saturday Only 25+ Obstacles 5-7 Miles

The Savage Race - Chicago will take place in Spring Grove on Saturday 11 July 2026. You can run between 3 and 7 kilometers.