- Run
- Bike
Joe & Kim
Event Directors
Venue Address
Maiden Erlegh Chiltern Edge, Sonning Common, RG4 9LN
Chilterns Event Details
The fourth and final event of our 2025/26 Winter Series takes us to the Chilterns – great trails and rewarding terrain.
Our Winter Adventure Races combine trail running and mountain biking in some of the UK’s most stunning locations.
Our race format has been carefully designed to be as flexible and inclusive as possible, to challenge everyone irrespective of ability or experience.
For all events, you will use a map and compass to navigate to as many checkpoints as you can within the time limit. There are no set distances for any of the disciplines, you are in control of how far you run and bike.
Bike hire is available at all of our events so all you need is a pair of running shoes and a sense of adventure to join in!
Choose from a range of event options at our winter races:
- Duo Full – Run & Bike (5-hour Adventure Race): Navigate to as many checkpoints as you can within the time limit on bike and foot.
- Duo Taster – Run & Bike (3-hour Adventure Race): Perfect for those looking to give winter adventure racing a go. Navigate to as many checkpoints as you can within the time limit on bike and foot.
- Run-only – (2-hour Trail Run Orienteering): A trail-running adventure where you navigate to checkpoints using a map and compass.
- Bike-only – (2-hour Mountain Bike Orienteering): A thrilling mountain bike event where you pedal your way to as many checkpoints as possible within the time limit.
Please see the following links for further details of our events, event format and what’s included.
We can’t wait to welcome you for an unforgettable day of adventure!
Kim and Joe
Solos & Teams
Take part on your own or as a team of 2, 3 or 4 people
Score format
No fixed route or minimum distances, you are in control of how far you run and bike within the time limit
Bike hire available
You can hire a bike, if needed
Key Features
Questars winter adventure races give you the option to run and bike.
We give you a map with all the run and bike checkpoints marked on and you see how many you can visit within the time limit. You choose which checkpoints to visit and in what order. The time spent and distance covered on each discipline is up to you.
Bike hire is available, if needed. So all you need to take part is a pair of running shoes – and a sense of adventure! (plus a bit of mandatory safety kit!)
Take on the challenge of this adventure race on your own or team up with friends/family and go around together.
You can take part:
- on your own
- in a team of 2, 3 or 4 people
Teams who wish to be competitive must remain together for the duration of the race i.e. all team members do each discipline together (it is not a relay race).
Questars adventure races are challenging for everyone, irrespective of your ability or previous experience.
On average, a quarter of participants at a Questars event have never done an adventure race before. So if you are a complete beginner you will not be alone!
If you are an experienced adventure racer, expect some stiff competition. From Olympic medalists to Adventure Racing World Champions, we have had them all take part. We regularly attract international racers to our events as well.
Every participant needs a bike (unless you enter the run-only event).
We recommend that you use a mountain bike as these are best suited to deal with the broadest range of off-road terrain and trail conditions that you might encounter. You can either bring your own or hire one from our official provider.
You are welcome to use a different type of bike (e.g. cyclocross, gravel, e-bike, etc) if you want to, as long as:
- it is designed to be used off-road (slick tyres are not allowed)
- you understand and accept that it may not be as suitable as a mountain bike and may therefore hinder your progress
Anyone using an e-bike must declare this before they start and will be classified as non-competitive.
Facilities
Car Parking
Onsite parking at the venue for participants
Indoor Shelter
Hall providing large indoor space and shelter
Event Catering
Hot and cold food and drinks available onsite
Event Facilities
Toilet, showers and changing areas
Timetable
Bike Hire
- 1 x 9/10 speed Hardtail MTB
- Helmet (on request)
- Tools/pump (on request)
- Puncture protection
- Collect at the event
- Return at the finish
- On-site support
- Damage waiver
Bikes for the event can be hired from Cyclexperience and collected from the event base on the day.
Cyclexperience have been providing a bike hire service at Questars adventure races for over 15 years now. They are offering the usual package for Questars participants which includes delivery, onsite support, post-ride maintenance and cleaning.
Hire bikes must be booked in advance. Booking early is strongly recommended to ensure availability.
