13th Rick O'Donnell 8-hour Ultra Challenge
13th Rick O'Donnell 8-hour Ultra Challenge is a 8-hour timed race in Boonsboro, MD, United States, taking place on Oct 11, 2026.
- Date
- Oct 11, 2026
- Duration
- 8 h
- Location
- Boonsboro, MD, United States
- Format
- Timed race