Home→Get involved→Fundraising events→London Summer Walk 2026 

About the event

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 Barracks – there’s a marathon looped route, which heads into the heart of the Capital – alongside a 25km option taking in Greenwich, and a 10km option if you’re after something a bit shorter! Routes steeped in history with iconic sights, a lively warm up, full support all the way, rest stops with snacks and drinks, and capped with a BBQ meal, bar and music at the finish, making for a wonderful active end of summer celebration!

 📅 When: 22 August 2026
📍  Where: Woolwich, London
🏃‍➡️  Distance: Various (10km, 25km, Marathon)
🪙  Registration: Various
🧡  Fundraising pledge: Various
🏅  Receive a medal and certificate

This event is part of the Ultra Challenge Series.

Fundraising Options

Choose a distance and fundraising option that suits you…

OPTION 1: Full Charity Sponsorship

You pay a small registration fee, do lots of fundraising and we cover the cost of your event place! 

 

  • Marathon: £40 registration fee and £375 fundraising target
  • 25km: £30 registration fee and £275 fundraising target
  • 10km: £20 registration fee and £100 fundraising target

 

At least 50% of your sponsorship target must be with Anaphylaxis UK 3 weeks prior to the challenge. Failure to meet the deadline may result in cancellation of your place. The remaining 50% and any extra, should be with Anaphylaxis UK by 4 weeks after the challenge. Remember, we’re here to support you get to your fundraising target!

Sign up

OPTION 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. 

 

  • Marathon: £75 registration fee and £225 fundraising target
  • 25km: £50 registration fee and £150 fundraising target
  • 10km: £22.50 registration fee and £70 fundraising target

 

At least 50% of your sponsorship target must be with Anaphylaxis UK 3 weeks prior to the challenge. Failure to meet the deadline may result in cancellation of your place. The remaining 50% and any extra, should be with Anaphylaxis UK by 4 weeks after the challenge. Remember, we’re here to support you get to your fundraising target!

Sign up

OPTION 3: Own Place Fundraising

You pay the full cost of the event place – fundraise as much as you can, with no set target or deadline, and there’s a small admin fee to the charity.

 

  • Marathon: £139 fee
  • 25km: £89 fee
  • 10km: £49 fee

Sign up

Supporting you

We know that fundraising can be just as challenging as the event, but we’re here to support you every step of the way. Join our team and you’ll receive the very best support from us to ensure your challenge and fundraising journey is enjoyable and a success, including:

  • Our Fundraising Pack with tips and advice on how to reach your fundraising target
  • Regular email check-ins and the latest news about the event and Anaphylaxis UK

Ultra Challenge Calendar 2026

With 20 Ultra Challenge events to choose from, and distance options ranging from 10km up to the full 100km, see what other treks and trail runs are out there!

From stunning coastlines and trails through magnificent countryside, you’ll get full support all the way–including plenty of food and drink, medics and massage, camaraderie, a medal and T shirt. Plus, an amazing sense of achievement. There’s an Ultra Challenge waiting for you in 2026.

Supporting us

The money you raise for Anaphylaxis UK will do so much for someone at risk from a serious allergic reaction and anaphylaxis…

£120 raised...

could pay for a healthcare professional to complete our AllergyWise®️ training course to ensure staff working in a community setting recognise the signs of anaphylaxis and know how to confidently respond to a reaction.

£300 raised...

could help develop much-needed resources to reduce allergy-related anxiety and equip people with tools they may need to cope with living with allergies. A positive release of accessible information via digital guides, infographics, bitesize podcasts and videos.

£500 raised...

could help us grow our Support Group network to strengthen local support for individuals and families living with serious allergies. This exciting new initiative will create a safe, inclusive space where people affected by serious allergies can come together, share experiences, and support one another.

£900 raised...

could pay for 3 face-to-face visits to education settings from our Education & AllergyWise®️ Manager, Tracey Dunn. Tracey has 15+ years experience as a qualified teacher and mum to children with allergies, and shares her expertise with schools to improve their allergy management.

Got your own place?

Let us know!