The Maverick X Series Chilterns 2025
Saturday 19 July 2025 | Stonor Park
Our X-Series Chilterns sets off four brand new trail running routes from the 850-years old Manor House of Stonor Park. The estate is home to one of the most ancient deer herds in Britain, so keep your eyes peeled for the graceful fallow deer that have grazed here since medieval times. Out on the trails if you’re lucky you may also spot the rare red kite, which have successfully been saved from national extinction in the area.
All four routes weave through the estate and surrounding Chilterns Area of Outstanding Natural Beauty. However it’s not all a blissful fairy-tale or a chance to spot rare wildlife, there are some ferocious trails to negotiate, with climbs and descents reaching gradients of 22% in parts. You’ll need your head firmly focused on the task ahead to get through some parts of this event.
DETAILS
Registration: 8:00am
Start time:
Ultra: 09:00am
Long: 09:30am
Middle: 10:00am
Short: 10:30am
DIFFICULTY
Undulating with some punchy hills, woodland and winding trails, suited to all levels of trail runner.
More Info
Pricing
Online entry closes on Thursday 17th July 2025 at midday (12:00). On the day entries will be available if the event is not sold out.
All entries are subject to a small booking fee.
Participants under the age of 16 must be accompanied by a participating adult.
MULTIBUY
Enter any 3 races from any series, or 3 entries into this event, and get 20% off
MORE INFO
CUT OFF POINTS & TIMES
These are in place for your safety and apply to the Ultra & Long route only. If you do not get to these points in time you will have to be collected as we don’t believe you will finish the route in time. Your safety is our priority.
You will have 8hr30 to complete the routes. Cut off times will be published soon.
OUTPOSTS
There will be no outpost on the Short route. There will be 2 outposts on the Middle route. There will be 3 outposts on the Long route. There will be 4 outposts on the Ultra route.The outposts are designed to act as a top up for what you are already carrying. There will be a range of sweet & savoury snacks (fruit, cake, crisps) as well as Precision Hydration fuel & electrolyte. Please note outposts on this route do not have space for spectators.
There will not be pre-filled water cups available at the outpost. Please have your re-useable cup or bottle ready when you arrive and make use of our self serve water barrels.
PLASTIC FREE
In our quest to make this season plastic-free, we ask that you run with a reusable cup or bottle. Speed Cups are available to purchase at each event and online.
HEADPHONES
We strongly recommend not wearing headphones at this event.
TRANSFERS
If for any reason you wish to transfer out from an event we are happy to do this, but once only. You may transfer to any event listed on our website or even change to a higher value event and pay the difference. We cannot action any transfers or refunds for an event that has sold out.
The last day to transfer out of an event is the Monday before event day (5 days before the event), please email us on info@maverick-race.com with the name of the event you would like to move to. We are not able to move you out of an event if you contact us after this day
The Routes
Choose your route carefully. The distance and elevation gain should give you some indication as to how easy/hard each route is, as well as showing you where the tougher climbs are.
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What you get
ESSENTIAL ITEMS
PLEASE PACK:
These items are mandatory for the Ultra and Long race
• Trail shoes
• Waterproof jacket
• Mobile phone (in case of emergency)
• Enough food and drink (at least 1 litre) to last you the race - there will be outpost on course to top up
• Foil blanket
• A re-usable cup (we’d like to ensure our are races plastic free!)
• GPX of the route
We recommend all runners, regardless of distance, carry their mobile phone and at least 1 litre of water.
Getting to the Race
By Car
Free parking at the venue. If you're looking to share transport you can message other runners via the Maverick Race Facebook group
If arriving by car you must enter the venue via New Road - what3words ///worthy.trail.scrapping There will NOT be any vehicle access via Merton Road.
By Train
Nearest Station: Princes Risborough (15 minute walk to start venue)
Southern Railway: London Marylebone - Princes Risborough
Journey Time: Approx 55mins
By Taxi
Village Cars
01844 342551
How to stay hydrated
Take Precision Fuel & Hydration's free trail running sweat test to get a hydration plan tailored to your Maverick Race
Free Sweat TestBring your own cup
In an effort to keep our trails clean and preserve the nature around us, we’re aiming to keep out outposts cup free. Please bring a cup or bottle to re-fill.
Get a Maverick Speedcup
