About the challenge
About the challenge
Date: Saturday 13 September 2025
Event type: Trek, jog or run
Location: East/Central London
Registration Fee: £20 - £89 depending on chosen option
Fundraising Target: £70 - £275 depending on chosen option
Level: Easy to moderate
Join 2000 trekkers as we venture 25km across the Capital taking in unrivalled views of the skyline from its best vantage points.
Setting out from Putney Bridge - it's East towards the City, zig-zagging over the array of historic bridges-each with its fascinating story-and a midpoint stop at Kennington Oval for some snacks & drinks. 25km later, it's a finish line celebration in Southwark past the majestic Tower Bridge.
WWF is an official Series Partner on all Ultra Challenge treks!
As we are an official Series Partner, you can get 50% off charity sponsorship registration fees. Find out more here
Join the challenge
Join the challenge
The route and distance options:
25km from Bishops Park, Fulham to Southwark Park, East/Central London
NEW! 10km option available.
Registration fees and sponsorship targets:
Charity sponsorship - pay a small registration fee and do lots of fundraising
25km Challenge - £30 registration fee + £275 fundraising target
10km Challenge - £20 registration fee + £100 fundraising target
Mixed Funding - pay a higher contribution to the cost of your place and fundraise less
25km Challenge - £50 registration fee + £150 fundraising target
10km Challenge - £22.50 registration fee + £70 fundraising target
Own Place Funding - pay for your place and fundraise whatever you can
25km Challenge - £89 joining fee + fundraise what you can
10km Challenge - £39 joining fee + fundraise what you can
For Charity and Mixed Funding options, you will need to raise 50% of your fundraising target at least three weeks before the event in order to confirm your place on the day.
How we support you
How we support you
We're with you every step of the way towards event day with advice and information so you can just focus on your training and fundraising. We'll also provide:
- Our fundraising pack to help you achieve your target
- Walkers pack including WWF t-shirt and headband
- Exclusive access to our private Team Panda Facebook Group
- Online training hub to help you prepare safely for your challenge