Willis River - Cumberland, VA
Cumberland, United States • 4 Jan 2026
Event details
The Willis River Fat Ass takes place Sunday, Jan 4, 2026, at Bear Creek Lake State Park in Cumberland, VA. The event offers the following distances:
- 50K
- 35K
- 20K
Registration closes Sat, Jan 3 at 11:59 PM ET. The event is free to enter; runners are asked to bring prepackaged food to share. Donations are appreciated to help cover permit, insurance, and portajohn costs.
Course and logistics
The 35K route runs much of the Willis River Trail. The 50K comprises the 35K loop, a return to the start, and an added Bear Creek 10-mile portion. The 20K goes to the first aid station, then returns to the start. The course includes stream crossings, rolling hills, and is described as wet; participants should expect wet feet. The organizer provides water, marked course, and portajohns. The course can be hard to follow in places; participants are advised to backtrack to the last white blaze if they go off course. Prepackaged food only is requested for shared items; any items that would be touched by multiple people may be discarded. Visit the organization's website for the most recent information.