Chiltern Way Ultra: 100k Distance

7am Sunday August 26th 2018

The Chiltern Way 100k Ultra is a waymarked route that starts at Little Hampden and goes clockwise  along the Chiltern Way loop to finish in Hemel Hempstead.


The Entry Fee for the 100k is £70 If you are affiliated to a club or the TRA and £72 if you are not. (No entries on the day.)


Early bird entry offers!
Enter before October 1st and the 100k is only £40.

Enter before December 1st and the 100k is only £55.

After that the price reverts to the standard £70 for the 100k.

To register for the Chiltern Ultra 100k, please click the following link.
Before registering, please read all of the race information on this page.

Click here to register

Course Information

Start location: Little Hampden where Chiltern way crosses the road in the village.

Finish Location: Felden Lodge, Hemel Hempstead, Hertfordshire HP3 0BL.


This will be a very tough ultra and the terrain will be mostly off road on tracks and bridleways with some road and a fair bit of mud if the weather is not kind. Most of the route is on footpaths and bridleways.

Race Schedule

Registration: From 05:00 at fnish area before being transported to the start.

Brief: 06:30

Start Time: 07:00 race  


Cut Offs: 20 hours (03:00am on Sunday) but individual cut offs at each checkpoint. (See the checkpoints page for full details.)

Route Description

The route will be marked with Chiltern Way markers and runners will navigate the course using maps provided with runners being given the maps at the start of the race in a waterproof zip folder. The course will not be marked by us and navigation will be with the maps and permanent signs. You will be required to navigate using the 1:25,000 map sheets provided.


The route is generally well waymarked and signposted but some places are not marked and you must expect to be using the maps provided and not rely on the signs.

There will be 3 checkpoints along the way with runners carrying all kit needed for the duration of the race. Drop bags will be available only at half way (CP7) - and then subsequently ferried to the finish.


At checkpoints there will be basic food such as wraps, snacks, cold food, sweets, coke, water and squash etc.

Checkpoints & Navigation

To view a list of all checkpoints, maps and GPX files, please visit the Checkpoints & Navigation page.

Compulsory kit list

  • Head torch (with spare batteries) - Minimun of 100 lumens brightness.
  • Waterproofs top and bottoms (not just windproof) - Must have taped seams
  • Compass - a real one with degrees on and everything! Not on your phone/watch or a keyring - you must be able to use it too!
  • Spare base layers (top and bottom)
  • Hat or buff
  • 1 litre minimum water carrying ability, bladder or bottles - you can carry more if you wish or its hot. There is a long way between some checkpoints.
  • Reflective clothing at night or band/light on pack
  • Mobile phone charged and turned on for the race (do not tweet your battery to death!) - We need to be able to phone ot text you important info.


Entry list

To view the list of entrants, visit the Webscorer page.




Without the small army of volunteers who help out at our races we would not be as successful at putting on great events. We really appreciate our volunteers; to read about the rewards of volunteering at Challenge Running events, and to view which tasks we still need help with, please click here to view the Chiltern Ultra volunteering page.


Qualifying Criteria

Anyone entering this event should have completed at least one marathon distance race previously and be able to evidence this when entering. To give yourself a realistic chance of completing this event you should be able to demonstrate completing a marathon in 6 hours or less or have previous ultra experience. You will be asked to supply details in the entry process.



Accomodation is available on the Saturday night before the race at £15 per night in a hostel style bunk bed, you can pay for this as an extra on entry (up to a maximum of 25 people).


After the race you will be ale to nap in a bed or on the floor in a hall - please bring a sleeping bag if you want to sleep after the race before going home. We have the building until Monday 10am.



We are happy for supporters to meet runners anywhere on the route but no assistance is allowed except at checkpoint and drinks etc should not be provided along the route as this is unfair assistance.

Pacers are not allowed for the 100k event.



We will provide transport to the 100k start from the race start/finish included in the price as there is limited space at the start of the 100k. Transport will be provided to the start at 6:00am. Parking at start is restricted to staff only and as its early please be aware of disrturbance to local residents.


Parking in grounds at the finish if needed.



999 for all major incidents/injuries plus call race director for all other issues including dropping out. We have our own event first aiders for minor injuries and emergencies.

Refund Policy

We understand that sometimes training does not go to plan or you pick up an injury so we have as fair a refund policy as possible.

Up to 6 weeks before the date of the race you may transfer to another event or have a refund of 60% of your entry fee.

Up to 2 weeks before the date of the race you may transfer your entry to another runner only with our permission (subject to all details being supplied).

Closer than 2 weeks and we are unable to make any changes.



T Shirt and Medals to Finishers. You will have to earn it though!


Race Rules

We know rules can be boring but they are here for your safety, and our permit to run the race depends on us running the race within the rules.


The race is run under UK Athletics rules which can be viewed here.


Below are our own race rules in addition to the UKA rules:


This is considered a non-stop race, any runner stopping for more than 2 hours at a checkpoint will be considered retired. This is to stop the event becoming a 2 day event and runners sleeping overnight.


No MP3 players etc. to be worn during the race for safety reasons. If you wear one and can not hear marshals or traffic, this is your responsibility. There are many other users on the footpaths such as cyclists walkers and other runners. Please ensure you can hear them and allow them to pass.


Please display your number on your front at all time (this is a UKA rule as well).


Please obey all instructions by marshals and checkpoint staff as they only have your safety in mind.


Please leave no litter on the route and hand rubbish in to checkpoints as our permit may be at risk if litter is found after the race.


If you drop out for any reason, you must tell a marshal or phone the race director as we don't want to be looking for you at the end of the race.


If you break any UKA or race rules then any decision by the race director is final.

Race reports from previous runners

Our Fantastic race Sponsor

Join our group on STRAVA
All race permits (except for the Monarchs Way Ultra) are granted by the TRA and run under UKA Rules for competition.
Our Stort30 Race Photographer
We are proud to be partnered with UKA
Our leaders are members
Our leaders are members

Data Protection Policy