group photo with Tower Bridge at sunrise
Trek

Thames Bridges Challenge

Event Type Trek
Date 13 September 2025
Location East/Central London
Registration Fee £20 - £89 depending on option chosen
Fundraising Target £150 - £240 depending on option chosen
Distance 25km
Event Organiser Action Challenge

Choose a charity sponsorship place and get 50% off your registration fee - just select Alzheimer's Society as your charity on signup!

The Challenge

Join over 2000 walkers and trek across the Capital taking in unrivalled views of the skyline from its best vantage points, alongside historic landmarks.

Setting out from the Putney Bridge start we had East towards the City, zig-zagging over the array of 16 historic bridges – each with its own fascinating story – and a mid point rest stop at The Oval Cricket Ground for some snacks & drinks. 25km later, it’s a finish line celebration in Southwark Park past the final crossing – the majestic Tower Bridge.

Your entry includes free food and drink at regular rest stops, plus support including medics, marshals and massage. As you cross the finish line, you’ll get a glass of fizz and a medal to commemorate your achievement.

As Alzheimer's Society are an official partner on this event, you get a 50% discount on the ‘Full Sponsorship’ registration fee when signing up to support us.

The route

  • 25km from Bishops Park, Fulham to Southwark Park, East/Central London.  
  • 10km crosses Millennium Bridge,  Southwark Bridge, London Bridge and Tower Bridge.

Fundraising

You only need to raise half of the fundraising target 3 weeks ahead of the Thames Bridges Challenge to confirm your place - you can then top up the rest during, and after, the challenge!

Charity sponsorship - pay a small registration fee and do lots of fundraising! 
Remember you only need to raise half of the fundraising target to confirm your place. The Reg Fees below are 50% OFF standard fees – as you’ll be fundraising for an official SERIES CHARITY PARTNER

25km- £30 registration fee + £275 in fundraising

10km- £20 registration fee + £100 in fundraising

Mixed Funding - pay a higher contribution to the cost of your place and fundraise less

25km- £50 registration fee + £150 in fundraising

10km- £22.50 registration fee + £70 in fundraising

Don't worry, we're on hand to help you reach your goal, with lots of fundraising materials at the ready! Please get in touch for a chat if you have any questions, we're always happy to hear from you. 

Thames Bridges Logo

FAQs

For further information about the challenge, its inclusions, the route and FAQs, please visit the official organiser's website or email info@ultrachallenge.com.

If you have any fundraising questions, you can get in touch with a member of the Events team by getting in touch on the contacts below, and we will be delighted to help.

Contact us about this event

Got a question about this event? Get in touch and we'll respond as soon as we can.

Ask a question
Call the events team