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, as well as team relay options for the longer distances. The course features a scenic 10-mile loop that includes grass trails, limestone tracks, and estate roads, making it suitable for both novice and experienced runners.

The event emphasizes self-sufficiency, with aid stations and camping available for participants. Trophies will be awarded to top finishers in various categories. Visit the organization's website for the most recent information.