Running
The Ridgeway Challenge
139 km
2,200m

Running
The Ridgeway Challenge
139 km
2,200m
Trail
Chiltern Hills 100K
100 km
2,212m
Start: Sep 30, 03:00 PM
Running
The Ridgeway Chase
60 km
Running
Chiltern Ridge Classic 50K
50 km
Running
Chiltern Ridge Winter 50K
50 km
Running
Greensand Country 50K
50 km
Running
North Chilterns 50K
50 km
Running
Suffolk Coastal Path 50K
50 km
Running
Halbmarathon
21.1 km
Running
Hughenden Valley 10K
10 km
Running
Race The Light at Wendover Woods
5 km
Running
Tewinbury Trail
5 km
A 100K ultra marathon along the best and most loved trails within the Chiltern Hills.
Water, Coke, Precision Fuel & Hydration - PH 1000 Electrolyte Drink (pre-mixed), Precision Fuel & Hydration - PF 30 Gels, Precision Fuel & Hydration - PF 30 Chews, selection of crisps and sweets, pre-made sandwiches (jam, peanut butter, cheese), selection of fresh fruit (banana, orange, watermelon), hot drinks/water at 44k/60k/75k. Water available at all checkpoints.
Pacers are permitted from Goring-on-Thames onwards. Runners can only have one pacer with them at any time, and this person must be on foot (no bicycles, horses or motorised vehicles).
Monthly averages based on historical data (2000–present).
Register on the official organiser website.
Sign up nowPlease see the runner's guide for more information.
Yes, pacers are permitted from Goring-on-Thames onwards. Runners can only have one pacer with them at any time, and this person must be on foot (no bicycles, horses or motorised vehicles please!).
There is an overall 28 hour cutoff for the entire race. Please see our checkpoint page for details of cutoff times at each aid station.
Yes, you may drop a bag with us at the start. This bag will be transported to checkpoint 5 (South Stoke) and then on to the finish. The size of this bag should not exceed 50 litres.
If you decide not to continue, this must be done at one of the checkpoint locations, unless there is a medical reason that prevents you from doing so. If you stop prior to CP5, we will transport you to CP5, where you will have access to your drop bag, and can arrange onwards travel/pickup. If you stop after checkpoint 5, we will transport to you to the finish.
We are operating a coach transfer service to the start from Swindon, this will depart at 06:45 on race morning. Please book this during race signup.We are also offering transport to the start from both Tring train station, and the Premier Inn nearby, this can also be booked during signup.
You must arrange your own onwards transport from the finish.If you are getting picked up, there is a large National Trust car park that is open for the full duration of the event.We will provide details of local taxi firms that operate in the area. Additionally, there are local buses to Swindon and Devizes from ~9am on Sunday morning.We will provide shelter and warmth whilst you are awaiting pickup, however the are no sleeping facilities at the finish.
All runners will be given a GPS tracker which broadcasts their location for the full duration of the race.
By entering our race, you agree to the following withdrawal policy. This policy applies to all runners with the exception of women of cannot compete due to pregnancy. Withdrawal date Credits issued More than 4 weeks before race day 90% Credits can be used on future race entries, any time during the following 12 months. Withdrawal requests must be completed online via our manage booking functionality.
If you decide not to continue, this must be done at one of the checkpoint locations, unless there is a medical reason that prevents you from doing so. Our sweeper minibus will transport you to the finish location, where you can arrange onwards travel or pickup.
Before the race, We are operating a coach service to the start from the finish. This will depart at 08:00 on race morning. You may park you car at the finish for the duration of the race. The car park opens at 07:30.
Our 50K race is considered a fast and approachable event for all runners. Unlike our other ultras this race is predominately flat and will allow you to keep a consistent pace during the entire 50K.The terrain is a mixture of paved paths, dirt trails and country lanes and this will suit anyone transitioning to trail running from a road running background. The main challenge at this event is to ensure you pace the first 75% of the race at a managable speed to leave enough in the tank for the last stretch.
No, there are no qualifiying standards required to enter this race.
Our route will be marked throughout with orange signage/ribbons, along with marshals at several key points. Course checkers will be out during the race ensuring that signage remains in place.We ask runners to make sure they have access to the route via a phone or watch, to act as a backup in an emergency.
There is an overall 9-hour time limit for this race. Please see our information document for details of specific checkpoint cut off times.
There will be portable toilets at the start and fixed toilets at the finish. Toilets will also be available at or near our four checkpoints. The route also passess many public toilets along the coast line.
No, unfortunately we cannot provide changing facilities at this event.
As this race starts and finishes in different locations you will need to think about how to get to/back to your car. The easiest option is to take advantage of our coach service. We have two options, either parking at the finish and taking the coach to the start before the race, or parking at the start and returning after you have finished the race.
We would recommend light trail running shoes for this race. The paths are non-technical, but there will be plenty of varied and uneven terrain. There are several sections on paved paths and country lanes, so don't wear anything too minimal, unless you are used to it. Some runners have opted for road running shoes in the past, but please only do this if you are confident in maintaining stability on uneven or soft ground.
There are awards for the top three male and female finishers overall, along with age category awards for FV40, MV40, FV50, MV50, FV60, MV60, FV70, MV70.
Most GPS watches allow you to upload a GPX file of the route for you to follow whilst running. Typically this is done by loading the GPX file into the app (i.e Garmin Connect), and then syncing your phone/watch together.If you don't have a GPS watch we would recommend using OS Maps (£20/year) or Strava Premium (£48/year).
Berkhamsted train stations is a 5 min walk to the start finish and has very regular trains in and out of London.
Please wear trail running shoes for this race. You will encounter varried terrain along the route that will become slippery/muddy in wet weather conditions.
We recommend using our coach transfer to the start, or back to Berkhamsted after the race. This can be booked during registration, or at a later date.
The race is open to all runners who finish within the top 20% at Runaway Racing events within 2026, all age category winners and all event volunteers.
Last updated: Jun 6, 2026, 12:09:21 AM
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