25km
Sat 23 Aug 2025 London, UK

London Summer Walk | 25km

Get your walking shoes on and explore some of the capital’s less-known historic areas and along the Thames’s eastern section to finish with a big cheer, glass of fizz, t-shirt and BBQ meal!

  • Sat 23 Aug 2025
Royal Artillery Barracks, London

25km

10:00

Age 14 & over

£89

  • 25 km walking

Event overview

Starting alongside the grandeur of Woolwich Royal Artillery Barracks (a short walk from the Elizabeth Line, DLR, and Overground) – there is a new marathon looped route for this year which heads into the heart of the capital alongside the existing 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, and capped with a hot meal, bar and music at the finish – making for a wonderful end-of-summer celebration!

The Ultra Challenge Experience

This challenge is part of the UK's number one series of trek and trails runs for a wide range of ages, fitness and experience levels.

Choose your challenge and do it at your pace. The level of support enables you to go further, whilst enjoying the great outdoors, camaraderie, and the challenge. There are marquee rest stops, lots of food and drink, medical and massage teams, with a fully signed route to guide you.

A big finish-line celebration awaits with an amazing sense of achievement and once the aches subside you’ll feel energised, up for more of life’s real challenges – and, maybe, personal horizons redefined.

This event is part of London Summer Walk.

  • All fitness levels
  • Event village
  • Newcomers
  • Teams

Your challenge, your way

Whether you’re a walker and new to challenge events, an experienced trekker, a marathon enthusiast upping the distance, or a seasoned ultra runner after UTMB points – there’s an Ultra Challenge® for you! Walk, Jog, or Run at your pace, as an Individual or a Team, for a charity of your choice or just for you. There’s an Ultra March® option for ‘fast walkers’ – and a new ‘Solo Challenger’ start time to join up with others.

Best support & hospitality

This Ultra Challenge® famously lays on the best support and hospitality available on any UK endurance-style event. This enables you to step up and confidently tackle an 'Ultra' distance, with the best chance of success - and to enjoy your challenge! Here's a summary:

Before

  • Challenge app
  • Facebook forum
  • Training guides
  • Fundraising support
  • Training walks and runs
  • Video briefings
  • Travel planning

During

  • Chip timing and tracking
  • Rest stops
  • Food and drink
  • Medical support

Along the route

  • Fully signed route
  • Apps, maps and GPS
  • Route safety experts
  • Emergency response
  • Trek masters

After

  • Finish line experience
  • Finish times and certificate
  • Hot meal
  • Medical care and follow up
  • Deals on future challenges

  • Bar
  • BBQ
  • Cafe
  • Music
  • Urban

Event HQ

Royal Artillery Barracks
Woolwich
London
Greater London
SE18 6SU
UK

Map

Click here to open map

What3words

///skill.nasal.eating

  • Check points
  • Distance markers
  • First aid
  • Flat
  • Food stations
  • Marshals
  • Toilets
  • Water stations
  • Way markers

Overview

From the basecamp start the route heads through the Woolwich Tunnel to Docklands. Along the Thames, through Canary Wharf and The Isle of Dogs. Back under the River via the Greenwich Foot Tunnel, past the Cutty Sark and a rest stop at the Old Naval College. Then along the Thames to the Greenwich Peninsular, past the O2, past the Thames Barrier, through Charlton, and back up to the basecamp in Woolwich, where a big cheer, medal, glass of fizz, T-shirts and BBQ meal await!

Map

map

  • Event app
  • Fizz at the finish
  • Map
  • Medal
  • Post-race meal
  • Training plan
  • T-shirt

Included

  • Summer Walk neck buff
  • Rest stop with snacks and drinks
  • Medics and full suppo
  • Summer Walk medal and certificate
  • Finishers meal and drinks bar

  • Age 14 & over
  • Entries open
  • Charity entries open
  • Charity places
  • Enter online
  • Event merch available

Under 18s need to be accompanied by an adult.

Entry fees

Entry fee

£89.00

A great experience, which I thoroughly enjoyed, already looking to book again!

The whole experience of walking round London but with the sunrise over Tower Bridge was brilliant.