World's Toughest Mudder 2025

World’s Toughest Mudder is the most extreme, imposing, pulse-pounding, heart-stopping 24-hour obstacle course challenge on the planet.

24 hours is a long time, but you don't have to go about this challenge alone. Take advantage of our team relay options - allowing you to tackle the WTM course in teams of up to 4 people.
Recruitment starts now, and no one is off limits. Fire up the group chat and rope in everyone from your closest friends and family to your best friend at work, or even that one Mudder you made friends with three years ago on Mud Mile.

You may also like the following events from Tough Mudder UK:

• Next Saturday, 10th May, 10:00 am, Tough Mudder London West | Europe's Toughest Infinity in Henley-on-thames
• This July, 5th July, 08:00 am, Tough Mudder Midlands in Grantham
• This July, 26th July, 08:00 am, Tough Mudder Yorkshire in Skipton

Also check out other Workshops in Grantham.