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The Wild Boundary Trail Run is a great way to take on a challenging trail run of more than half a marathon distance. This guided run over the hills and dells of the Chilterns takes in stunning views along ridgelines and down into beautiful ancient woodlands. Trail running is a great way to escape into nature and also is a great all round work out, so, whether you are training for road running or for trails, this is a great event to motivate you to push you to achieve your goals. With multiple guides and a 1:10 guiding ratio you are in good hands. We also match entrants by ability. Our guides provide trail running instruction and motivation along the way, without you having to worry about route finding and a well stocked refreshment stop along the route tops off this great day out!

Included in the running adventure are trail technique instruction from one of our experienced guides, information about the local area and environment, well stocked checkpoint and finisher's tech t-shirt.

The Chilterns are just 30 minutes North West of London. Leaving Tring station, accessed by main line rail. The local English Athletics qualified Run Leaders will show you the way, so you can enjoy the scenery, focus on your running and style.


You will need to arrange your own transport to the start of the adventure in Aldbury, but there are regular trains from London Euston to Tring Station which take around 40 minutes and is only a short walk to the meeting point. There is also an onsite free car park should you prefer to drive. Accommodation is available nearby, please get in touch if you would like any recommendations.


We will group participants by their ability but you need to have run a half marathon distance in the past (this doesn't need to have been part of an organised event or race). The Lead Runner will route find and as all with our events you will be expected to run as part of the team. 


The event will start at 9am, at Musette's, Aldbury which has free parking and is walking distance from Tring Station with direct train connections to London Euston. The event will finish around 2pm (full details in your booking pack).


  • Refreshment point with access to your spare kit bag
  • A Lead Runner for the team, with you every step of the way
  • Run the Wild tech t-shirt
  • 17 miles of amazing scenery!


  • Personal insurance (recommended)
  • Travel to / from Tring Station


You can see a list of the mandatory kit for this trip here. When you book you will be sent a list of recommended items as well. If you have any questions regarding kit requirements please contact us.


Days Mileage Grade Spaces Price Status
1 17 B 30 £59 Register Interest Register Interest

Please ensure that you have read our Terms and Conditions and Rules of Participation, as by making payment you confirm that you agree and understand the conditions as well as risks involved with trail running.


You can make payment above, using any form of payment (PayPal, Debit / Credit Card) on a laptop. If you are browsing from a mobile or tablet you will need to make payment by a PayPal account. You cannot purchase multiple tickets in a single transaction, so please enter seperate transactions. If you would like to buy multiple or group tickets or indeed prefer to make payment by bank transfer, please get in touch here. Once you've paid via PayPal you will be taken to a booking form, please fill in your details, if this does not load please email us.

We aim to respond to every booking within 24hrs. Our email will include your joining instructions and any other relevant details. Please check your spam folder for our email and if you haven't heard anything from us within 48hrs please get in touch!


Availability Status Definitions:

  • Available – the trip is available, please go ahead and book!
  • Guaranteed – this trip is available but has also reached the minimum number to guarantee it running.
  • Few remaining – limited space left on the trip, sign up quick! 
  • Sold out - sorry you've just missed it, please get in touch to get on the reserve list or create a bespoke trip!
  • Register Interest - let us know you are interested in booking.

If there are are no dates listed - we will be looking to put up new dates soon, get in touch if you would like to register interest or book a private trip.


"This morning was my first run with 'Run The Wild'. I was a little apprehensive as I usually run on my own, not with others. Well, I had a wonderful morning running the trails around Ashridge Forest and Ivinghoe Beacon. I met great people along the way and our guide Simon enhanced the whole experience with tips on trail techniques, sharing local knowledge and even a spooky ghost story! We ran in a small group of 8 and the team at 'Run The Wild' had matched our abilities perfectly to ensure we could all run at a similar pace. I am delighted to have discovered Run The Wild and will certainly join them again soon to discover more trails." Matthew, October 2020

"My friend and I had a blast today and we learned along the way. I will definitely do more events with you all!" Jon, October 2020

"The Wild Boundary Trail run was my first event with the Run the Wild team. A really well-organised, friendly day. Thank you to our guide Andrew, who was so supportive and put my pre-run nerves at ease. A beautiful trail run with a welcome refreshment stop along the way. I thoroughly recommend Run the Wild. Looking forward to trying out another event soon!" Tracy, October 2020

"Brilliant, thanks so much! Was a great day! George, October 2020

"Such a brilliant run. Really enjoyed it. Lovely route and a great group. Thank you!!" Nicola, October 2020

"Run the Wild Thanks for another stunning route and for keeping me going when the going got tough! Trail running at it’s best in a beautiful location with a team that know what they are doing. You make it fun, achievable and safe for all." Emma, October 2020

"Great company, fun trails, knowledgeable guides, brilliant event org! Thanks Run the Wild!" Annabelle, October 2020

"A fantastic first taste of Run The Wild, stunning trails, great company and some great insight into running techniques and our environment!" Ben, October 2020