London Summer Walk 2025

Participants at the London Summer Walk

Get active and soak up the capital's history

The full route heads through Charlton, along the Thames Path to Greenwich and the O2, Old Royal Naval College and the fabulous Cutty Sark. It's then onto central London – crossing the Thames via the Millenium footbridge, past the Tower of London, and on to the Olympic Park, before returning to Woolwich.

A route steeped in history with iconic sights, and capped with a BBQ and bar at the finish – making for a wonderful end of summer celebration!

With 50km, 25km and 10km challenge options available, there's a challenge for everyone. You can join as an individual or as a team.

Event details

Saturday 23 August 2025

London

A little girl sitting on a hospital bed

Why we need you

Great Ormond Street Hospital Charity (GOSH Charity) needs your support more than ever. By fundraising, you'll help to fund:

  • groundbreaking research
  • advanced equipment
  • children and family support services
  • the rebuilding and refurbishment of wards and medical facilities within the hospital

Why trek for GOSH Charity at the London Summer Walk?

As part of TeamGOSH, you'll receive:

  • A GOSH Charity t-shirt

  • Dedicated support from GOSH Charity's Challenge Events team

  • Inclusive and fun event with a great atmosphere and camaraderie

  • A fully signed route, with a team of ‘Trekmasters’ out on the trail with you

  • Regular covered rest stops, with free food and drink, massages and medics

  • An epic finish line moment, with a glass of fizz, medal and t-shirt