Chiltern Hills Backyard Ultra 24

Event not happening in 2026.

Due to really low entry numbers, we have sadly had to cancel this event and hope to return in 2027. Anyone signed up has been contacted via email with a full refund issued.

Welcome to the inaugural Chiltern Hills Backyard Ultra. Hosted exclusively in the Bradenham Estate within the Chiltern Hills AONB, run through pretty wildflower meadows and beech woodland with sweeping views across the valley. The backyard ultra is a 4 mile (6.7km) loop with 162 ascent. You will need to complete the lap in less than 1 hour before having to do your next lap. If you can’t make the start line for the next lap, you are out of the race. Complete 24 laps and you have run over 100 miles, anyone who makes the finish line after 24 hours will either ‘finish’ or DNF. The race will stop at 24 hours after going through the night, expect a welcoming atmosphere!

Race Details

14:00
All runners will need to register. Registration is open from 12:00
- Free professional photography
- Finisher medal
- Fully marked route
- Aid station at the finish with fruit, sweets and bars
- Hot drinks station
- Medics
- Timing
- TRA permitted event
Participants must be over 20 years on the day of the race.
- No refunds will be offered.
- No deferrals will be offered.
- We recommend you take out cancellation insurance to protect your entry.
- We reserve the right to cancel any event for weather or other factors outside our control. In such circumstances, your entry will be moved to a rescheduled event.
Full booking T&Cs here.
Extremly tough.
Manor Farm is in a beautiful but well connected part of the Chiltern Hills. A short distance off the A4010.
Manor Farm
Bradenham
High Wycombe
HP14 4HF
Google pin drop here.
TRAIN:
The closest train station is Saunderton which is a 25 minute walk from the venue. There are more frequent trains too High Wycombe and Princes Risborough. Connected by bus or taxi.
Saunderton Train Station
High Wycombe
HP14 4HX
BUS:
There is a bus stop outside the venue. Served by the X30 and 130 routes.
Bus stop: The Red Lion PH
Under UKA rules, no dogs are allowed to take part in the event.
There are no prizes for finishing. You either finish the event or DNF. All participants will receive a goodie bag.
The race is permitted through the Trail Running Association. Permit number: TBC
https://www.tra-uk.org/
You are welcome to have a max of two tents per runner. which can be setup in a designated zone near the event hub. This allows for supporters to have space to rest as well.

Two women jogging in a rural outdoor setting near the finish line of the Chiltern Hills Backyard Ultra race, with banners, flags, and a digital timer showing 24 hours, and a sign indicating one more lap and trail.

Two runners with headlamps running outdoors at night during a race.

Route Map

Chiltern Hills Backyard Ultra Loop

A gentle start until a climb up ‘the wall’, an unforgiving climb up to the top of the ridge. From here, you stay relatively high re-joining the ‘tank track’ through the woods. The second half of the route is relatively flat after the refuge point, opens up under big skies before a final effort to get to the finish.

GPX File Download

Garmin Route

OS Maps Route

The elevation gain is 152m, please see below graphic which had one big climb in the first km then flattens out.

Routes are subject to change, a final route will be sent out in the race information pack and can be adjusted on the day for safety or operational reasons.