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Thames Valley Spring Half Marathon

11:00am Sat 6th Apr 2019
Unnamed Road, Windsor SL4, UK
Run 13.1mi
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Loop around the famous Eton Dorney lake whilst racing the flattest course in the UK. Excellent racing atmosphere.
  • Flat
  • Race packs collected on the day
  • Finisher’s medal
  • Road

From the organizer

Organizer's website

With a great race atmosphere this really is one not to miss! Being the flattest half in the UK makes it ideal if you're pushing for a pb or if you're just starting out. Looping around the epic Eton Dorney Olympic lake make for a brilliant days racing.

Distances in this event

  1. Half Marathon

    Run 13.1mi
    11:00am Sat 6th Apr 2019
    Event passed
Course Maps
What’s Included

A well set out racing course, brilliant racing atmosphere and a medal for all finishers.

Course Details

This is a flat and fast one, after negotiating four and a half laps of the lake runners will have completed their half marathon.

Raceday Logistics

Event Registration

Located by the Main Marquee as you enter the lake on the right hand side. As you arrive at the event registration marquee a member of staff will give you your event number.
You will then receive:
1. Bib number. To be worn on the front when you are running.

2. Depending on the number of competitors, you may be asked to have your event number written on your hand. Staff to write your number in permanent marker that washes off skin.

3. Timing chip. This is supplied with a Velcro band to secure to your ankle. (DO NOT WEAR THE TIMING CHIP ON YOUR WRIST! ONLY TO BE WORN ON YOUR ANKLE)


11.30 - Site and Registration opens to competitors - do NOT arrive before this time

12.20 - Event Briefing - Main Registration Marquee - Compulsory

12.30 - Half Marathon Starts - Next to Main Registration Marquee

13.45 - 1st Competitor Finish

14.30 - Prize Presentation

15.30 - Run Course Closes and Event Closes to Competitors


Event Location

Dorney Lake, Eton College Rowing Centre, Windsor, Berkshire, SL4 6QP

Dorney Lake, Eton College Rowing Centre is conveniently located along the M4 Motorway, only 20 mins from London and 15 mins from the M25 and M40 motorways.


Please car share as there is not unlimited space!

Marshals will meet you at the gate and show you to an available spot

Kit List

For this run around Dorney we suggest you bring your best road running gear.


Plenty of space for all spectators, with food and drink available for purchase.


No volunteers required for this one



There will be first, second and third prizes for the over male and female along with junior and vet prizes for the top one in each of those categories.

Additional Information

This event at Dorney Lake is fully licensed and certified by UK Athletics to provide 100% accurately measured courses. This means that any time you achieve on these courses can be used for any future event or championship that might require a qualification time.

Entries taken within 2 weeks of the event & on the day of the event will include an additional £5 to the entry fee.

The minimum age to take part in this event is 17 years old on the day of the event. We also ask that no dogs or prams are taken on the course or event for the health and safety of all participants.

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Reviews (2)

3.4 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • Did the Half Marathon in 2019

    The event was well organised with the exception of sending out the wrong start & arrival times via email, which were different from their website. Luckily we clarified with them beforehand as we would have missed the race start!It was a very fast paced course with a close time of 2hrs30mins, so my slower two run buddies raced their legs off to get around in time (there were many behind them) to collect their well deserved finishers medal. Some of the marshals were packing up 10minutes before the closing time, and we almost couldnt get a snack afterwards as the snack van was also attempting to close! It all felt very rushed at the end and geared towards serving the fastest finishers and club runners. I think if it were less rushed, giving even just an extra 15minutes for clear-up, the final runners would feel as important as the more speedy runners. I think this would also attract more participants. Overall, it was a good experience (as I really enjoyed the lapped course) and got a Pb of exactly 2hours! (5 minutes off my previous hm times.) Also, two of the course marshals were fantastic encouragers on the way around cheering on those who struggled!However, we wont be taking part in this one again due to the above.
  • Did the Half Marathon in 2019

    Marshalls were nice and helpful. Course was good for a first time but not wildly interesting. Id try it again to aim to improve my time.

Questions & answers

Get answers from our team or a member of our dedicated community.

What would you like to know about this event?
  • J

    Jeremy K3rd Apr
    What time does it start?


    Steph E4th Apr
    Hi there, the venue and registration opens at 9am, and the race starts at 11am. Hope you enjoy the event!
  • R

    Rosie 4th Apr
    Will there be pace makers at this event?


    Steph E4th Apr
    Hi there. Just to let you know that unfortunately there won't be any pace makers at this event. Best of luck!
  • R

    Rachael S6th Apr
    Does it start at 11 or at 12.30?? Conflicting information!!


    Steph E6th Apr
    Hi there, Just to let you know that the race starts at 11am. Best of luck!

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Organizer Reviews


Announcer was great, staff that I met were friendly and open.
Malcolm M, 21st Feb 18


Good signage and friendly marshals
Malcolm M, 20th Feb 18


F3 organisation was excellent as usual.
Malcolm M, 20th Feb 18

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