Hertfordshire Half Marathon & 10k - November

Secondary header image
1 / 16
Secondary header image
Secondary header image
13 +

Booked 29 times in the last week
£28.00 - £34.00Free injury protection
Race around the luxurious Knebworth House in the Hertfordshire Half Marathon & 10k. Great for runners of all stripes, the route starts at the stately home before taking you onto the surrounding country roads. Come for the beautiful rural setting or for your first half marathon.
10k, and Half Marathon
View races
Sun 7th Nov 2021
View logistics
Stevenage, United Kingdom
View location
(7 Reviews)
All reviews
Perks of booking with Let's Do This

Best price guarantee


Official booking partner

We're #1 in customer satisfaction -

The event experience

Based on 3,000 participants

Serious Climbs

20 to 50m elevation gain per km

Where and when
Old Knebworth Ln, Stevenage SG1 2AX, UK
Start times
Half Marathon:
9:00am |
Races summary
Here's what races are available for Hertfordshire Half Marathon & 10k - November
Route information
The routes start and finish at the 500 year-old Knebworth House which has, in more recent times, hosted an array of open-air concerts featuring the likes of Robbie Williams and Oasis.
The route will take you through the wide paths of Knebworth Park and along the surrounding rural roads which will be closed to traffic. Please note, there are number of gradients throughout the course.
The course will have marshals stationed at all crucial points during the race as well as clear distance marking.
Organiser route images
What's included
  • Finisher's Medal
  • Refreshments along the Course
  • Finisher's T-Shirt
  • Chip Timed Race
  • Marshalled course
Secondary header image
Finisher's Medal
Secondary header image
Secondary header image
How to get there
Old Knebworth Ln, Stevenage SG1 2AX, UK
Get full directionsExternalLink
Address: Old Knebworth Ln, Knebworth, SG1 2AX
Car: For GPS please us the postcode for the Stevenage Novotel - SG1 2AX - rather than the Knebworth House postcode.
Train: The closest train station is Stevenage, which is two miles away from Knebworth Park. Regular services run to Stevenage from London King's Cross, as well as trains from Cambridge, York, Leeds, Newcastle, Edinburgh and Glasgow. Taxi's are available at the station.
Event day logistics
09:00 Half Marathon start
09:30 10k start
13:00 Event ends
Please arrive at least 45 minutes before the race to ensure you have ample time to complete the registration process.
*Further race day information will be sent out to those registered nearer the time.
RunThrough's logo
RunThrough is one of the UK’s premier running event organisers. Their events are widely regarded as inclusive and friendly, with the RunThrough community being at the heart of everything they do. Runners can enter a huge variety of distances from 5k’s all the way up to the mighty marathon. If you’re new to running and looking to book onto your first event, then these events are the ones for you.
View more RunThrough events
Spectator Info
This is a fantastic race for spectators who can station themselves at Knebworth House for the start and finish line.
Supporters can cheer on the athletes while also appreciating the 15th Century stately home in all its grandeur.
Where are the refreshment stations for the Hertfordshire Half Marathon & 10k - November?
There are three refreshment stations throughout the course at miles 3.5, 7.5 and 10 as well as an additional station for athletes as they cross the finish line.
Where can I see my race time?
Race results will be published on www.runthrough.co.uk following the race's conclusion.
How will I receive my race pack?
Race packs will be sent to entrants before the event date.
7 reviews
SceneryStunning scenery
FriendlyFaceFriendly atmosphere
BicepFlexChallenging course
Did the Half Marathon in 2019
Thank you for organising the great event today. I feel so accomplished. The Finisher's medal, t-shirt and the post race snacks are lovely 🥰🥰🥰
Grace M
Did the Half Marathon in 2019
I have just ran this half marathon for the first time and I loved it. I would highly recommend this run. It was hilly but as much as you went up you went down. The hill at the end was a challenge but a PB is still possible as I got an 8 minute one :-). Very well organised, great atmosphere, good for spectators. The only downer I can put on this event is the parking, lots of cars getting stuck in the mud including mine and very slow getting out.
Did the Half Marathon in 2019
Knebworth House is a stunning setting for the race. On arrival the race village was busy for the warm-up session. The course took us on a couple laps of the estate before heading out to surrounding country lanes. It was a challenging course with plenty of hills, so hard to run a PB, but don’t let that put you off, a good turn out and supportive marshals and crowds made for a great event.
Did the Half Marathon in 2018
Arrival was plain sailing, although leaving was busy. Men's urinals would be useful too, to reduce general toilet queueing. Challenging & rewarding course. Brutal final 1km, even if I had checked the gradient profiling. Good atmosphere, very scenic countryside, nice medal, awesome goodies for finishing. The 'village' was great, huge bonus of a free massage & enjoyed the music. Definitely a HM worth doing again, pb included! See you next year.
Did the Half Marathon in 2018
A bit more information about the gradient and at which miles this applies too.Any toilets on the course.Allowing time to get out of Nebworth as took a long time due to single exit.
Did the Half Marathon in 2018
How hilly it was! Though I still would have done it but I think it should state its undulating in the race description. I did however enjoy the race and managed a Pb, despite the hills!! There were unfortunately more unenthusiastic marshals that let down the enthusiastic ones! When youre running and knackered a boost from a Marshall seriously helps your motivation! Marshall @ mike 11 was great
Did the Half Marathon in 2018
Hilly at times but the descents made up for it.
Less reviews
Ask a question
Find out more from members of the community who did the event last year, or those signed up.
Is your question about booking your place?
Recent Questions
Hannah King
I have just entered this race via let’s do this and haven’t received a confirmation email. No response to emails to customer services either. Can you help?
Madeleine Raynel
Hi Hannah, Rachel's sent that over to you so you should have the info now :)
Ben Taylor
Will the results go on power of 10?
Sue Harris
Is this event still going ahead at this time (30/10/20) I appreciate things are changing all the time.
helen Moye
they have put up the signs announcing the road closures, so now will see if there is anything in a potential lockdown that might change things
Peter Lane
Hi is this definitely not being cancelled?
Sam Browne (Team LDT)
Hey Peter! At the moment this race is still going ahead. RunThrough (the organiser) have been doing a bunch of other races during this period and they've all been COVID secure and felt really safe with proper social distancing etc so am definitely expecting and looking forward to this going ahead. If anything changes then RunThrough and Let's Do This will email you. Hope you have a great race!
Steph Ede
What will be provided at the Aid Stations?
Bryony Reeves
Are headphones allowed?
Steph Ede
Hi there. Thanks for getting in touch. Headphones are allowed but the event organiser strongly advises against using them due to the nature of the event.
Grace Mead
Can we wear head phones/head phone at this event please?
Steph Ede
Hi there, we’d strongly advise against it – the nature of the events means that you need to be aware of your surroundings and be able to hear marshals instructions
Louisa Sharpless
can you let me know how hilly the event is please
£28.00 - £34.00Free injury protection
© Let's Do This 2021