Chiltern 50 Ultra Challenge 2025

Location: England

Date: Sat 27th Sep 2025

With historic trails, rolling hills, nature reserves, and fantastic views – this is one not to miss! 

At our basecamp in Henley, there’s a Saturday night celebration BBQ, bar & entertainment, with extensive on-site camping & parking options. 

A route with real variety and some wonderful scenery – and easily accessible from London. You’ll get full support & hospitality, and with 25 km loop option and a 10K loop also available, there’s a Chiltern Ultra Challenge® for everyone!

Keeping you well fed & hydrated is key, snacks & drinks are included!

  • Snacks & drink stops every 12.5 km
  • Snacks – from the healthy to treats
  • Picnic at 25 km (for 50km participants)
  • Energy drinks
  • All dietary requirements catered for
  • Lighter options for ‘runners’
  • Finishers hot meal 50 km (picnic for 25km & 10km)

There are experienced Doctors, Paramedics, First Aiders, Podiatrists, and Massage Teams at Rest Stops. There’re ‘Self Help’ areas with blister plasters, talc, Vaseline, and tape if you want to patch your own feet.

Chiltern 50 Challenge

You’ll get a medal, finisher’s T-shirt, and a glass of fizz, before heading to a BBQ and a well earned rest.

To enquire about the Chiltern 50 Challenge or any other walking/running events, please contact our Events Team at 020 7803 1123 or [email protected] .