There’s no event quite like the Chiltern 50 Ultra Challenge, winding through some of the Chilterns finest countryside, with historic trails, rolling hills, nature reserves and fantastic views.
Participants can enjoy a Saturday night celebration BBQ, bar and entertainment, with extensive on-site camping and parking options.
Distances range from 10-50km, with reg fees and minimum sponsorship varying based on the distance selected.
For more information: www.ultrachallenge.com
Event:
Event Type: Walk, Run, Jog
Location: Henley-on-Thames, Oxfordshire
Date: September
Distance: 6-31mi / 10-50km
Reg Fee: £40-£70
Minimum sponsorship: £400-£700
Have questions about the event?
Reach out to our friendly Challenge Events Team.
1 April, 2026 • National
Take on the challenge of a lifetime as you scale Britain's three highest peaks within 24 hours!
Learn More1 April, 2026 • London
Experience the thrill of running past the capital's most iconic sights, from Big Ben to St. Paul's Cathedral.
Learn More1 April, 2026 • Manchester
The Manchester Marathon is the UK's flattest major marathon, making it a great first marathon for keen runners or those looking for their PB.
Learn More