North Downs 50 Challenge 2025

Participants at the North Downs

Setting out from a Guildford basecamp to the fabulous North Downs

A looped 50km route which takes in some of the best of the Surrey hills, the North Downs Way, and the surrounding countryside – with real variety, some wonderful scenery and fabulous views out to the south.

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 12 July 2025

North Downs

A little girl sitting on a hospital bed

Why we need you

Great Ormond Street Hospital Charity (GOSH Charity) 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 North Downs 50 Challenge?

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