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Grim Reaper Running Festival

Bourne, United Kingdom • 23-24 May 2026

The Grim Reaper Running Festival 2026 takes place at the scenic Grimsthorpe Castle Estate in South Lincolnshire. This multi-distance event offers solo races of 10, 40, 70, and 100 miles, plus a 100-mile team relay. The course features a fully marked 10-mile loop combining grass trails through ancient woodland, limestone tracks, quiet estate roads, and a disused Victorian railway line, with an elevation gain of about 550 feet per lap. Runners can expect a friendly, supportive atmosphere suitable for all abilities. The event includes day and night 10-mile races, on-site camping, limited aid stations, and mandatory kit requirements for ultra distances. Visit the organization's website for the most recent information.

United Kingdom East Midlands (England) Bourne

Race information

Website
UTMB 50K UTMB 100K UTMB 100M
100 mi
100 Miles
100 mi
100-Mile Team Relay
70 mi
70 Miles
40 mi
40 Miles
10 mi
10 Miles (day Race)
10 mi
10 Miles (night Race)
Visit the organization's website for the most recent information.
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