Tough Mudder is a 10 mile muddy obstacle course designed to drag you out of your comfort zone and put you to the test. 

You're not racing against the clock, it's all about team work and proving to yourself just how tough you really are. 

Ticket sales for Tough Mudder Yorkshire are now open - simply register on the Tough Mudder website and then let us know here that you are supporting Sheffield Hospitals Charity and we'll send you a FREE charity T-Shirt to represent Sheffield in style at Yorkshire's muddiest event.

If you've already taken the plunge and registered with Tough Mudder, let us know and our wonderful fundraising team will be touch.