About This Race
Covering 100 miles of mixed terrain, Bourne, Lincolnshire, with 1,680 meters of elevation gain.
The ultimate challenge of ten complete loops around the castle estate, requiring exceptional preparation and race strategy. Starting at 7am Saturday, runners have 28 hours to complete this demanding test while enjoying pacer support from mile 50 onward.
Elevation Profile
Elevation profile estimated from terrain data. Actual course may differ.
The course gains 212m over 161km, with the steepest section between km 129–km 129.
Location
Practical Info
On-site camping is permitted on Friday and Saturday nights close to the start/finish line, making it convenient for supply storage during ultra distances.
- mobile phone
- survival blanket
- headtorch
- backup light
- long-sleeved baselayer
- waterproof jacket
- 1-liter water capacity
- cup
Best For
Notable Features
The race takes place on the grounds of historic Grimsthorpe Castle, with runners finishing in front of the castle itself. The course features a unique mix of terrain including ancient woodland trails, a disused Victorian railway line, and paths around the estate lake, creating both scenic beauty and historical interest throughout the 10-mile loop.