Race details

The Chiltern Ridge is an iconic 50km ultra marathon set in the heart of the Chiltern Hills.

The 5th edition of the Chiltern Ridge Ultra Trail 50km will take place on Sunday 7th May 2023 at 9am.

Set in the heart of the Chiltern Hills, our single loop course takes runners on a stunning journey along The Ridgeway, Chiltern Way and Ashridge Estate.

The course offers a variety of terrain, combining forest running, ridgeline views and picturesque countryside.

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50KM Ultra Trail

£68 unaffiliated / £66 affiliated


Key Information

Sunday, 7th May 2023
Start Time
Event base
Fuzzy's Farm, Pouchen End Ln, HP1 2SN
Distance / Elevation
50.2km / 835m+
Cut off
8.5 hours
Arrow markers and orange ribbons
UTMB Qualfier
50K Index Race
£66 (UKA affiliated)/ £68 (Unaffiliated)

Please scroll down to find a list of resources, such as GPX files, maps, videos and more.

View resources

Route Description

The course is a single loop with a short connecting section to get to/from the event base.

Runners complete the route in an anti-clockwise direction.

Start > Great Gaddesden > Studham > Whipsnade (CP1) > Dunstable Downs > Dagnall (CP2) > Ivinghoe Beacon > Albury (CP3) > Ashridge Estate > Frithsden (CP4) > Great Gaddesden > Finish

CP 1 - Whipsnade
CP 2 - Dagnall
CP 3 - Aldbury
CP 4 - Frithsden

Event resources

Last updated - 7th March 2022

GPX File
OS Maps
Google Maps
Printable map
Essential info doc (PDF)
Route Fly-through video
Race briefing video

Latest Updates

Date change
6th Nov 2022

The date for the 2023 race has changed from 6th May, to Sunday 7th May.

This is due to King's coronation taking place on the same day.

All runners have been contacted via email.

Route Map

Race Navigation

Route Navigation

This race will be fully marked, with our orange arrow markers and ribbons.

Marshals will be out on the course aiding navigation at road crossings and busier sections.

All runners must carry a digital version of the route, either on a watch or phone, just in-case you find yourself off course. There will also be printed maps available at registration.

Race checkpoints

Aid stations

All four checkpoints will act as both timing points and feed stations. These will contain the following items:

  • Water
  • Coke
  • Mountain fuel electrolyte drink (pre-mixed, raw flavour)
  • Mountain fuel energy gels (lime or orange)
  • Selection of crisps and sweets
  • Tribe energy bars
  • Fresh fruit (banana, orange)
Event base

Event base

Our event base, held at Fuzzy’s Farm in Hertfordshire is designed for runners and spectators to enjoy both pre and post race.

Hot drinks will be on offer throughout the day, along with food and local beer.

Car parking is available on site, along with toilets and a bag drop facility.

View on Google Maps

Required Gear

Required gear

All runners will be required to carry the following items for the entirety of the run:

  • Mobile phone (emergency number saved)
  • Route map on watch/phone or paper map (provided)
  • Windproof or light jacket
  • Refillable water/hydration system (0.5L min)
  • Cash or bank card

Entry details

Registration is £68 (or £66 to affiliated runners), runners must be aged 20 years or older.

  • Entry to the 50KM race
  • Event permitted by the TRA
  • Car parking at the event base
  • Finishers medal
  • Chip timing with live results
  • Four on-route aid stations
  • Course wide medical support
  • Bag drop at the event base

T-Shirts are available to purchase on our store.

Entry details

Withdrawal options

By entering our race, you agree to the following withdrawal policy. This policy applies to all runners and no exceptions can be made.

Withdrawal date
Race Credits
More than 12 weeks before race day
4-12 weeks before race day
2-4 weeks before race day
Less than two weeks to race day

To make a withdrawal request, please follow the button below and fill in the form.

Withdraw from race
Event withdrawal

It was so well organised both in the weeks building up to it and on the day, and the course was so well marked you couldn’t possibly go wrong out there.


Chiltern Ridge 50km, 2021

Good organisation , great people, excellent route marking , all put together to make a super event. Even a bit of weather to add to the atmosphere :)


Chiltern Ridge 50km, 2021

Event partners

National Trust
The Ridgeway National Trail
UTMB World Series
Ugoku Projects
Chiltern Society
Athletic Brewing
Mountain Fuel

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