The GrimReaper Ultra

Date & Location

Grimsthorpe, Lincolnshire

Organiser’s Description

A non-stop race that continues through the night, incorporating multiple loops around the grounds of Grimsthorpe Castle. Solo and team categories will compete over various race distances (40, 70 and 100 miles) with all having the same time limit of 26 hours. The Grim Reaper UltraMarathon has gained a loyal following year on year and has proved hugely popular, and Grimsthorpe Castle in Lincolnshire is a fantastic venue for the event. The terrain is a mixture of a limestone trail, tarmac and field trails. (Date tbc)


  • 40 miles
  • 70 miles
  • 100 miles
  • Running
  • Ultra
  • 51 - 100km
  • Over 100km
  • 26 - 50 miles
  • 51 - 100 miles
  • Trail

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