London Summer Walk

Take in the iconic sights of summer in the capital with marathon, 25km and 10km courses

About the event

Join the London Summer Walk and turn your steps into support for people experiencing homelessness by fundraising for St Mungo’s. This unique walk explores some of London’s lesser-known historic areas, starting with a looped route down to the Thames, through the Woolwich Tunnel, and into the Docklands.

The 25km route takes in iconic sights like the Cutty Sark, Old Naval College, and Greenwich Peninsula, while the full Marathon route adds even more – including the Olympic Park, Tower of London, South Bank, and Borough Market – before finishing with stunning views of Canary Wharf. With a 10km option too, it’s a fantastic end of summer celebration. Every mile you walk helps St Mungo’s provide safe accommodation, vital support, and a path to recovery for the people we support.

£20-139

Registration fee

22 August 2026

Date of event

£0-375

Fundraising target

10-25km or 26.2 miles

Race distance

What you'll get from the event

  • Tea, coffee, snacks and water
  • Picnic lunch
  • Glass of fizz at the finish, medal and a t-shirt
  • For longer challenges, meals are also provided

What you'll get from St Mungo's

  • A fundraising pack filled with top tips to increase your sponsorship.
  • St Mungo’s top to represent us on the day.
  • Access to our online community where you can chat to other challengers.
  • Support from our dedicated events team who will give you one to one advice all the way.
Two people participating in a St Mungo's Challenge Event

Fundraising Options

Self funding 

You pay the full cost of the event place – fundraise whatever you want, with no set target or deadline.

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

 

Charity Sponsorship

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

  • 10km: Reg fee £20 / fundraising target £150
  • 25km: Reg fee £30 / fundraising target £275
  • Marathon: Reg fee £40 / fundraising target £375

 

Mixed Funding

Pay half of the event place cost yourself, fundraise a bit less and we pay the balance of the event place cost.

  • 10km: Reg fee £25 / fundraising target £75
  • 25km: Reg fee £50 / fundraising target £150
  • Marathon: Reg fee £75 / fundraising target £225