Tough Mudder

With numerous events across the UK, it's time to test how tough you really are.

These hardcore 10 to 12-mile obstacle courses will be a true test of your strength, stamina and mental grit.

Overcome hills, icy water, muddy fields, rope climbs, fire and electricity in this hardcore obstacle course.

You can choose between a 10 to 12-mile full Tough Mudder course, or, a shorter five-mile half Tough Mudder course.

Get your Tough Mudder place today for just £35. We ask all our team members to commit to raising £350 for the children at the hospital. Up for the challenge? Find an event near you below.

The year ahead

The first Tough Mudder events for 2018 have been announced, secure your place today and set yourself a fantastic challenge for the new year!

  • London West weekend 1 - Saturday 28 April 2018 (half or full)
  • London West weekend 2 - Saturday 5 and Sunday 6 May (half or full)
  • Midlands weekend 1 - Saturday 12th May  (half or full)
  • Midlands weekend 2 - Saturday 19 and Sunday 20 May (half or full)
  • Scotland - Saturday 16 and Sunday 17 June (half or full)
  • London North – Saturday 7 and Sunday 8 July (half or full)
  • Yorkshire – Saturday 28 and Sunday 29 July (half or full)
  • South West – Saturday 18 and Sunday 19 August (half or full)
  • North West – Saturday 8 and Sunday 9 September (half or full)
  • London South weekend 1 – Saturday 22 September (half or full)
  • London South weekend 2 – Saturday 29 and Sunday 30 September (half or full)

Sign me up

As part of Team GOSH you'll receive

  • a fundraising pack full of tips, advice and fundraising materials

  • a complimentary professional running vest

  • access to professional training plans

  • unlimited support from a dedicated Challenge Events team

  • the satisfaction of knowing you're helping Great Ormond Street Hospital provide world-class care to its young patients and their families


We'll help you get to the start line! We’ve partnered with Mbition, the Adaptive Training plan, to get you prepared to have an amazing race day. It creates a custom training plan which is 100% built around your fitness, schedule and goal. It then cleverly adapts as you progress.

Set up your free 30-day trial and create your own personal plan in two minutes. Once your trial is up, you can sign up and get 25% off for being a GOSH runner!