The Grim Reaper Ultra Marathon

Based at Grimsthorpe Castle in Lincolnshire, the race is non-stop and will continue through the night, incorporating multiple loops through the beautiful grounds.

Solo Entries

You can enter the event as a solo runner, with distances of 40, 70, or 100 miles !

Team Entries

Do you want to take on the challenge with your friends ( between 2-4 persons per team for all distances )? You can enter a team for 40 miles , 70 miles or 100 miles

The Location & History

The GrimReaper UltraMarathon started in 2009 and is going from strength to strength. The race has gained a loyal following year on year, proving to be hugely popular. Located in the grounds of Grimsthorpe Castle, Lincolnshire, the historic house, park and gardens, are a fantastic venue for the event.