Grim Reaper Ultra Marathon

The Grim Reaper Ultra Marathon is a multi-distance running event set in the picturesque Grimsthorpe Castle Estate in South Lincolnshire, scheduled for May 24-25, 2025. Participants can choose from four solo distances: 10, 40, 70, and 100 miles, along with team relay options for the longer distances. The course features a scenic 10-mile loop that includes grass trails, limestone tracks, and quiet estate roads.

Runners are encouraged to be self-sufficient, with aid stations available. The event promotes a friendly atmosphere, welcoming runners of all abilities, and offers camping facilities for participants. Visit the organization's website for the most recent information.