Loading Events

England’s greatest river provides a fantastic backdrop for an unforgettable challenge. Over 3000 adventurers will join the Putney Bridge start, and the full 100km route heads upstream to Henley along the famous Towpath. It’s through Richmond, Hampton Court, Runnymede, and Windsor, with some wonderful scenery to a riverside finish line. With three quarter, half, quarter distance options also available – plus the separate 25km ‘Thames Bridges Trek’ & ‘The Moonlight 10 Walk’ through Central London as part of the weekend ‘festival’ – there’s a Thames Challenge for everyone!

Sponsorship: Different options available, please see below:

1. FULL SPONSORSHIP

Pay a small Reg Fee & Fundraise for a chosen Charity (who pay for your place)

FULL CHALLENGE ~100km – £40 Reg Fee & at least – £575 fundraising/sponsorship
3/4 CHALLENGE ~75km – £35 Reg Fee & at least – £450 fundraising/sponsorship
1/2 CHALLENGE ~50km – £30 Reg Fee & at least – £360 fundraising/sponsorship
1/4 CHALLENGE ~25km – £20 Reg Fee & at least – £240 fundraising/sponsorship
10K CHALLENGE ~10km – £10 Reg Fee & at least – £100 fundraising/sponsorship

2. MIXED FUNDING

Pay for half your place cost & fundraise less for Charity (who pay half of your place cost)

FULL CHALLENGE ~100km – £100 Reg Fee & at least – £300 fundraising/sponsorship
3/4 CHALLENGE ~75km – £90 Reg Fee & at least – £270 fundraising/sponsorship
1/2 CHALLENGE ~50km – £75 Reg Fee & at least – £225 fundraising/sponsorship
1/4 CHALLENGE ~25km – £50 Reg Fee & at least – £150 fundraising/sponsorship
10K CHALLENGE ~10km – £22.50 Reg Fee & at least – £70 fundraising/sponsorship

3. OWN PLACE FUNDRAISING

Pay for your place & fundraise whatever you can for a Charity (small admin fee to charity)

FULL CHALLENGE ~100km – £198 Fee paid online & fundraise whatever you can
3/4 CHALLENGE ~75km – £169 Fee paid online & fundraise whatever you can
1/2 CHALLENGE ~50km – £139 Fee paid online & fundraise whatever you can
1/4 CHALLENGE ~25km – £89 Fee paid online & fundraise whatever you can
10K CHALLENGE ~10km – £39 Fee paid online & fundraise whatever you can

What you’ll get from Leukaemia UK

  • Leukaemia UK running vest
  • Challenge pack, including sponsorship forms and helpful training and fundraising advice
  • Dedicated support from our fantastic fundraising team

Interested? Contact Hanna on fundraising@leukaemiauk.org.uk or sign up here

Event details
When
13 September 2025 - 14 September 2025
Where
London
Sponsorship
Different options available
Sign me up
+ Add to Google Calendar + Add to iCal

Similar events

Thames Moonlight 10: September 2025

Thames Moonlight 10: September 2025

The Moonlight 10 Walk kicks off the famous Thames Path Challenge weekend festival of riverside events! Take on either a spirited 10 km or an energetic 10 mile looped route walk through the heart of London as darkness falls and the Moon rises. Experience London in a different light, passing famous landmarks – including St Paul’s, Westminster Abbey, Tower Bridge, the London Eye and more. A lively finish line awaits – with a glass of fizz & a special Moon…

London Summer Walk: August 2025

London Summer Walk: August 2025

Get your walking shoes on and explore some of the Capital’s less known historic areas with a tour of the ‘gateway to London’ along the Thames’s eastern section. Starting alongside the grandeur of Woolwich Royal Artillery Barracks (short walk from Elizabeth Line, DLR, & Overground) – we have a NEW 50km looped route, with an Ultra March™ option for 2024 which heads into the heart of the Capital – alongside the existing 25km option taking in Greenwich – and a NEW 10km option if you’re…

North Downs 50: July 2025

North Downs 50: July 2025

We’re back on the North Downs with a fabulous challenge setting out from our Guildford basecamp, and a looped 50 km route which takes in some of the best of the Surrey hills, the North Downs Way, and the surrounding countryside. A route with real variety and some wonderful scenery & fabulous views out to the south – and easily accessible from London! You’ll get full support & hospitality, and with 25 km & 10 km options also available, and…