March 2025


A Stunning Trail Run Experience!

Training for the London Marathon? Or perhaps just looking for an exciting new challenge? Join us for our Pre-London Windsor Trail Run  with a Half Marathon & 10km trail run through the historically picturesque Thames Valley. Enjoy an idyllic start and finish at the foot of Windsor Castle following the most scenic riverside trails along the River Thames & Jubilee River.

This event is not designed to be a gruelling cross country through deep mud and puddles, but aims to be a fun, friendly and fast trail run along one of England’s most historic courses – read about the course story here. We hope that our onsite facilities, commentary and music provide plenty to keep other halves and little ones entertained, ensuring a day out for all the family while you run.

If you have never visited the Thames Valley or Windsor & Eton, this could be the perfect opportunity.

Entries are subject to a small booking fee.

Event Information


10km Trail Run (approx. 6.09 miles / 9.80km*) – £27
Half Marathon Trail Run (approx. 13.5 miles / 21.73km*) – £39

*Approx. distances due to trails.

Course Maps

Please note: This trail run route follows nature trails therefore distances are as accurate as can be, but has a 3% tolerance on 100% distance.


The race village and finish line will be located in Alexandra Gardens:

Alexandra Gardens, Barry Avenue, Windsor, Berkshire, SL4 1QX

The start line is a short 500m walk over Eton Bridge on The Brocas.

Start Times

09:00am: Half Marathon Start (Rolling Start)
09:30am: 10km Start (Rolling Start)

The event will be a rolling start with participants heading off in small waves every few minutes. Our rolling start creates a relaxed and friendly atmosphere, limiting any participant congestion along the route. If you are looking to win your event then please make sure you are at the front of the first wave of runners that head off.


If you are looking to take part in this event then why not help fundraise for a special cause. There are lots of amazing charities and support groups, both local and national, that help thousands of people each year and with your support and kind donations you can help grow their awareness and fund towards new developments and studies.


  • Ample toilets to cater for those last minute nerves!
  • Competitor baggage area in main event village at £2.50 per bag.

  • Multiple drink stations to keep you hydrated throughout the event.
  • Lead cyclist for first wave group.
  • Onsite catering serving hot and cold food and beverages.


  • Half Marathon: Participants must be 17 years or older as of the day of the event.
  • 10km: Participants must be 15 years or older as of the day of the event.
  • Noise-cancelling earphones/headphones are prohibited and, whilst we discourage the use of other earphones/headphones, participants choosing to use them should ensure they are set to a low enough volume that instructions from event officials can be clearly understood.

  • This event is not suitable for buggies, pushchairs, strollers (or similar) due to the nature of the terrain.


There will be prizes for 1st, 2nd & 3rd Male & Female overall finishers for each event.

Bespoke Medals for ALL finishers.

Sign Up Today!

What distance will you choose Half Marathon or 10km?