Grim Reaper
Trail and ultra marathon event in Lincolnshire with 10 mile loop racing through woodland, estate tracks and countryside at Grimsthorpe Castle.
| Date | Saturday 23rd May, 2026 |
|---|---|
| Distance | 10M + other events: Ultra, 40M, 70M, 100M, Ultra relays |
| Location | Grimsthorpe Castle |
| Town/City | Bourne |
| Area | Lincolnshire |
| Start postcode | PE10 0LY |
| Website | Visit website |
The Grim Reaper is a multi distance trail and ultra marathon event at Grimsthorpe Castle Estate in Lincolnshire. Runners can choose from 10 mile, 40 mile, 70 mile and 100 mile races, including relay options, on a scenic loop course through woodland, grass trails, limestone tracks and quiet estate roads.
The undulating 10 mile route passes ancient woodland, estate lakes and sections of disused railway line before returning to the castle grounds. Designed for both experienced ultra runners and those stepping up to longer trail distances, the event combines runnable terrain with a supportive endurance race atmosphere.
Location
Results
| Results | Verification Status |
|---|---|
| 2026 results | Verified |
| 2025 results | Verified |
| 2024 results | Verified |
| 2023 results | Verified |
- Verified
- Chip timing company
- Organiser
- Organiser’s website
- Community
- Social/Other
- Pending
- Results pending
