About the event

Date: 13-14 September 2025

The Thames Path Ultra Challenge invites you to walk, jog or run a distance of your choice, along a signed route, with free food and drink at regular rest stops, plus support including medics, marshals and massage. Get the ‘Ultra Challenge’ support & hospitality all the way – helping you to push yourself further and achieve something really special for Anaphylaxis UK.

The full Thames Path Ultra Challenge 100km follows England’s greatest river, from Putney Bridge past Hampton Court to Runnymede of Magna Carta fame at 50km, then on past wonderful historic scenery all the way to Henley. then on through Windsor and wonderful historic scenery all the way to Henley – and will test spirit & determination but is totally achievable with good preparation and the Ultra Challenge support. With 75km, 50km, 25km and 10km challenge options also available – there’s a challenge here for everyone – and you can join as an individual or as a team of friends / family.

You may have to dig deep at times, you’ll meet new friends along the way, and the journey will be unforgettable! As you cross the finish line, you’ll get a big welcome from the cheer squad, a glass of fizz, t-shirt, and a special medal to celebrate your achievement.

Head to the Ultra Challenge page to find out full details of prices and how to sign up.

WHAT YOU’LL GET:

  • Sign up from £10
  • Inclusive & fun event with a great atmosphere and camaraderie
  • Choose your distance – including 25km, 50km, 100km PLUS a Henley 10km option
  • Walk, jog, or run – it’s your challenge, your way!
  • A fully signed route, with a team of ‘Trekmasters’ out on the trail with you
  • Regular covered rest stops, with free food & drink, massages and medics
  • An epic finish line moment, with a glass of fizz, medal and t-shirt
  • Camping and transfer options to make getting there & away easy
  • Full fundraising support, and a choice of fundraising options

 

By joining #TeamAnaphylaxis, you’ll be raising invaluable awareness and funds that will help provide trusted and scientifically based resources for individuals and their families, businesses, and places of education. Together, we are creating a brighter future for people living with serious allergies. Thank you.

Fundraising Options

Choose the option that’s best for you, and we promise to support you in reaching your fundraising target.

1. Full Sponsorship for Charity
You pay a small registration fee, do lots of fundraising and we cover the cost of your event place!

  • 50km: Registration fee is £40. Fundraising target is £375 for Anaphylaxis UK
  • 25km: Registration fee is £30. Fundraising target is £275 for Anaphylaxis UK
  • Other distances (100km,75km, 10km) and fundraising targets are also available

 

2. Mixed Funding for Charity
Pay half of the event place cost yourself, fundraise a bit less and we pay the balance of the event place cost.

  • 50km: Registration fee is £75. Fundraising target is £225 for Anaphylaxis UK
  • 25km: Registration fee is £50. Fundraising target is £150 for Anaphylaxis UK
  • Other distances (100km,75km, 10km) and fundraising targets are also available

 

3. Own Place Charity Fundraising
You pay the full cost of the event place, fundraise whatever you can, with no set target or deadline, and there’s no event place cost at all to Anaphylaxis UK!

  • 50km: Registration fee is £139. No charity fundraising target for Anaphylaxis UK
  • 25km: Registration fee is £89. No charity fundraising target for Anaphylaxis UK
  • Other distances (100km,75km, 10km) and entry fees are also available

In return for your support, you will receive:

  • A guaranteed place in the event representing Anaphylaxis UK
  • A complimentary Anaphylaxis UK running vest or t-shirt
  • Our Fundraising Pack with tips and advice on how to reach your fundraising target
  • The very best support from the Fundraising team

 

We know that fundraising can be just as challenging as the event, but we’re here to support you every step of the way to make your event a success.

Sign up to the Thames Path Challenge 2025

Sign up

Any Questions?

We would love to hear from you and answer any questions you may have. Feel free to get in touch with the Fundraising Team.