Tough Mudder | London South | 19 - 20 Sept

Take on Tough Mudder London South in 2026 and fundraise for Child Bereavement UK 

Get ready to get filthy at Tough Mudder London South – set in the wild, wooded terrain of Holmbush Estate, just outside London. Take on the 5K or 15K course packed with 12+ or 20+ obstacles with the added challenge of knee-juddering hills, natural mudslides, and gravity-defying climbs and crawls. Earn your headband, medal, and finisher tee, then dive into the festival vibe of Mudder Village with music, food, and that well-deserved celebratory drink. Gather your team and test your limits!

There’s even kids adventure courses too – packed full of obstacles to give children aged 4-14 years the chance to work as a team and get muddy.

Registration fees: from £23.60 | Fundraising target: raise what you can

Register for the Tough Mudder Challenge

When you fundraise for us, you’ll receive:

• a welcome email and fundraising pack

• a branded top to wear on the day

• support from our dedicated team to help you achieve your target

• additional fundraising resources upon request

• access to training app by our partners at GH Training

• e-newsletters with news from across the charity.