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Royal Windsor Half Marathon & 10k River Trail Run

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Tickets £32

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  • Official booking partner
  • Best price guarantee
  • Free cancellation protection

Have a question? See our Help Center

Race in the heart of the picturesque Thames Valley in this half marathon trail race. This is a flat and relatively mud-free trail run, so ideal for runners looking to make inroads into the sport of trail running. Come for the country air, scenery and bespoke finisher's medal.

Review summary

12 Reviews
  • Course
  • Organisation
  • Atmosphere


Jonathan F
"It is a very nice course, well organised, not to big and generally, very..."


Mark T
"Course was fine, organisation was haphazard - e.g. sound system not working for..."


NZ Girl
"It was a great experience for my first half! It went well and everyone was so..."
See all reviews

How to enter the Royal Windsor Half Marathon & 10k River Trail Run

  1. Half Marathon

    Run 13.1mi
    Book Now
  2. 10k

    Run 10km
    Entry Closed

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Royal Windsor Half Marathon & 10k River Trail Run routes

Both courses start and finish at the foot of the beautiful and historic Windsor Castle, current home of Her Majesty Queen Elizabeth II.

The flat course is mainly run along river trail paths and will incorporate many of the key landmarks that have made this area so famous. Some of the highlights include Boveney Lock, Bray, Dorney and Eton.

The course is not designed to be the classic gruelling cross country through puddles and deep mud. Instead it is a fun, friendly and fast trail run through some of the most beautiful countryside the Thames Valley has to offer.

Event Details

What’s Included
  • Marshalled Course
  • Chip timed event
  • Finisher's medal
  • Refreshment stations
  • Aid stations
  • Secure bag drop
  • Spectator entertainment
Raceday Logistics


Registration Open - Saturday 13:00 - 17:00, Sunday 06:00 - 08:30 (emergency and international registration only) at Alexandra Gardens, Barry Avenue.

08:30 - Half Marathon Starts

09:00 - 10KM Start


This is a good event for spectators. There are lots of onsite facilities such as commentary and music which should help to keep other halves and little ones entertained. There is no fee for spectators to attend the event.


If are interested in volunteering for this event, please email [email protected]

In return F3 events will offer you:

  • Free entries for yourself or a family member
  • Free food and drink provided at the event
  • Event clothing

Frequently Asked Questions

Can I run with a pram or dog?
No, unfortunately neither of these are permitted on the race site.
How old do I need to be to participate in this race?
There is a minimum participant age of 17 for this event.
Where can I find my results?
The results will be posted on F3 events website directly after the race. You will also receive a results email which will be sent to your email address after the event.
Is there a cut off time?
The official cut off time to complete the Half Marathon event is 3 hours 30 minutes.
When should I register for my event?
Due to the popularity of the event, it is advised that competitors try to attend the Saturday registration. At registration, runners will receive their race number, timing chip and any other information about the race.
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Royal Windsor Half Marathon & 10k River Trail Run weather forecast

Drizzle throughout the day.

Predicted highs
Predicted lows
IconHigh chance of rain
IconLight breeze possible, up to 8mph

Meet the organizer

F3 Events

Verified organizer

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F3 Events
Offering fun, friendly, family, fast and focused events across the South. F3 Events was set up in 2006 and has been one of the leading sporting event organisers along the Thames Valley for the past 10 years. Our mission is to organise, deliver and provide first class sporting events along the Thames Valley to aspiring athletes from complete beginners to elites athletes.

Royal Windsor Half Marathon & 10k River Trail Run reviews (12)

3.9 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • N

    NZ Girl

    Did the Half Marathon in 2019

    It was a great experience for my first half! It went well and everyone was so supportive and encouraging along the track. I appreciated the beautiful views and flat terrain. I made some great friends along the way and I felt great after completing it.
    My only 2 suggestions would be:
    - More aid stations; perhaps every 5 km would've been better if it wasn't possible to have more. Ideally every 4km would've been good. It was sort of stressful coming across injured people who didn't know when or where to get assistance (for anything from needing plaster to sprained ankles).
    - Instead of using gels in addition to water, offering an electrolyte drink instead or offering lollies for that extra energy. As I had not trained on gels, I did not want to take one in-case my tummy didn't agree! so I was starting to feel like my sugar levels were dropping.
    I have definitley learnt from this race, not to rely on the event for what I need in terms of wellbeing and that I should carry with me my own water, lollies etc to get me through; which is a fantastic thing to do anyway, so it was definitely a positive.

    My husband and I really like the medals too, they are really neat! As we factored this run in to our holiday (as we travelled over from NZ to visit friends); I would 100% do this run again as I really enjoyed it!!

  • Did the Half Marathon in 2019

    Great event. Really enjoyed it. Please thanks those who organised and run it. Two minor points - the amplifier speakers didn't work (they were very quiet) for the briefing and £5 just to keep you bag is a bit much when you have spent over £40 on entry fee.
  • Did the Half Marathon in 2019

    Brilliant event, I will be back next year. The event was well organised, the nice weather always helps and I thoroughly enjoyed the whole experience!
  • Did the Half Marathon in 2019

    A really lovely course along the river Thames. Slightly chaotic start in ‘waves’ which didn’t mean very much as couldn’t quite hear. Some places in the first fee km the path is very narrow and you couldn’t go at your desired pace. The km markers were a bit random - not just based on my gps but several others running around me also commented they were out. So don’t trust them to keep your pace!
    That said the course was well sign posted and well marshalled with good number of drink and gel stops along the route. The atmosphere was good for a trail run but don’t expect crowds lining the route - it’s not that kind of run!

    My only very minor criticism was the last 500m after the up and over road bridge (which was a bit of a killer at the final km!) was the signposting/marshalling ran out and it was a bit tricky to know what the precise final route was as by that point you were back in the main part of Windsor with tourists milling about and children playing on the grass. So a bit more delineation in the final point would have topped it.

    All in all a really enjoyable run and I will definitely consider doing it again.

  • Did the Half Marathon in 2019

    I enjoyed the run and the course itself (it is effectively my home track). However, my watch is pretty accurate and it said I had completed a half marathon even before I reached Alexandra Gardens. I accept trail runs are a bit awkward to measure but both the start and the finish were in different locations this year. Also everything seemed to be not quite ready either for registration or the run itself.
  • Did the Half Marathon in 2019

    The path was okay but really disappointed by the atmosphere. There was none of it, no music even at the start to get people excited! felt very demotivated from the run. Also very little water stations. Expected more for an event that is £35!!
  • Did the Half Marathon in 2019

    Course was fine, organisation was haphazard - e.g. sound system not working for warm up. £5 extra for bag drop seemed OTT. And after-event email referenced post-run guidance for sore muscles with links to pre-run prep articles. All a bit chaotic....
  • Did the Half Marathon in 2019

    It is a very nice course, well organised, not to big and generally, very pleasant. I'd certainly run again in 2020.
  • Did the Half Marathon in 2019

    The trail was very pretty although a little narrow in parts. It was a really enjoyable morning. I could really hear the race starters and I thought it was a little lacking in atmosphere and momentum but overall the organisation was good.
  • Did the Half Marathon in 2019

    it was great - such a good local event great atmosphere, would have been nice to have a t shirt perhaps at the end