World's Toughest Mudder
In 2026, World’s Toughest Mudder returns to the formidable grounds of Belvoir Castle, where beauty is a trap and the course shows no mercy
| Date | Saturday 27th June, 2026 |
|---|---|
| Distance | Ultra + other events: Relay option |
| Location | Belvoir Castle |
| Town/City | Grantham |
| Area | North Yorkshire |
| Start postcode | NG32 1PA |
| Website | Visit website |
| Run For Charity |  Start Fundraising On GoFundMe |
For 24 hours, you’ll take on relentless 5-mile loops packed with brutal climbs, unforgiving terrain, and a constantly evolving gauntlet of new obstacles, reimagined classics, and cruel surprises designed to break even the toughest athletes. You'll be: against the elements; against the course; against yourself. Under the looming presence of the castle, you’ll dig deeper, push further, and discover just how far you’re willing to go. Belvoir will test your limits. The question is, will you outlast it?
