NEW FOR 2019! This fantastic 100km circular route will showcase the best of the Chilterns and surrounding areas. You'll run along three of the South's most iconic trails the Ridgeway, Icknield Way and Chiltern Way starting and finishing in Henley-on-Thames.

You will venture through nature reserves, under forests, along ancient footpaths and of course up some of the Chiltern's famed hills - it is a route with a huge amount if variety and varied landscapes which will amaze you.

Push yourself further - 100km Full Challenge, with Half & Quarter options also available.

You’ll get full support and hospitality all the way, leaving you to focus on your challenge!

  • Join as Individual or Team
  • 100km Full Challenge
  • Half or 1/4 Challenge options
  • Rest stops - free food & drink
  • ALL meals/ food included!
  • Medics, massage, and pacers
  • Medal, T shirt, glass of bubbly!
  • Run or Jog - set a New Goal!#
  • 2 Day Full 'Daylight' option
  • Camping options available
  • Pre-event training support + app
  • It's Your Challenge - Your Way!
  • Book a discounted place (click on sign up for another charity).

We will support you all the way – send you a Team Encephalitis t-shirt or vest, help with fundraising and share your efforts on our social media accounts.

All we ask you to is to raise the minimum sponsorship amount and the place is yours.

Email [email protected] for help and information.

Find out more about the route, support, and hospitality at www.ultrachallenge.com/chiltern-challenge