This looped challenge takes in Chilterns finest countryside, with historic trails, rolling hills, nature reserves, and fantastic views.
With basecamp at Henley-on-Thames, this is the hub for the 50km challenge, a route with real variety and some wonderful scenery – and easily accessible from London
Choose to walk, jog or run and select from the full challenge, half challenge, or a 10km route!
Date: Saturday 27th September, 2025
Location: Henley-on-Thames
Registration fee: Starting from £20
Fundraising pledge: Starting from £100
Pay a smaller registration fee & do lots of fundraising for Bliss - we cover your event place cost.
50km: Registration fee: £40 - Fundraising target: £375
25km: Registration fee: £30 - Fundraising target: £275
10km: Registration fee: £20 - Fundraising target: £100
Or, pay a higher registration fee to cover part of the cost of your place, and fundraise to a slightly lower target.
50km: Registration fee: £75 - Fundraising target: £225
25km: Registration fee: £50 - Fundraising target: £150
10km: Registration fee: £22.50 - Fundraising target: £70
On the day facilities: You'll receive food and drink at rest stops throughout the event, access to medics, massage, pace walkers and camping options - plus a medal and glass of bubbly to celebrate at the finish line.
Support: You will receive pre-event support from our friendly events team as well as comprehensive support and training details from the event organiser, Ultra Challenges.
Community: You'll be invited to join an online group to connect with other Team Bliss challenge event fundraisers to share stories, training and fundraising tips.
A Bliss t-shirt: You'll get your own Bliss top to wear on the day.
Please note this event is organised by Ultra Challenge. Find out more on the Ultra Challenge website.
For answers to your questions, you can:
Read Ultra Challenge's frequently asked questions or contact the Ultra Challenge team directly at [email protected].
Or you can contact the Bliss fundraising events team at [email protected].
