Early bird price release!
Early bird entry - ends soon
Hertfordshire Half Marathon & 10k November 2026
Sun, Nov 1, 2026, 9:00 am
Old Knebworth Ln, Knebworth
1 / 12
£36
EARLY BIRD PRICE
LIMITED TIME OFFER
9 +
Hertfordshire Half Marathon & 10k November 2026
Not quite ready to book?
Save this event for later and come back to it when you're ready.
Price increases soon
About
Race around the historic Knebworth House in the Hertfordshire Half Marathon & 10k. Perfect for runners of all levels, the route starts at the stately home before taking you into the surrounding countryside. Come to enjoy the stunning setting or to complete your first half marathon.
Half Marathon, Half Marathon inc T-Shirt (+£12), Group of 6 Booking, and 2 more
View details
Sun, Nov 1, 2026
View logistics
Knebworth, United Kingdom
View location
Where and when
Location
Old Knebworth Ln, Knebworth, UK
Start times
Sunday, Nov 1, 2026
Half Marathon: 9:00 AMHalf Marathon inc T-Shirt (+£12): 9:00 AMGroup of 6 Booking: 9:00 AM10k: 9:30 AM10k inc T-Shirt (+£12): 9:30 AM
Event summary
Here are the distances available for Hertfordshire Half Marathon & 10k November 2026
10k
10km
£36
Half Marathon
13.1mi
£42
10k inc T-Shirt (+£12)
10km
£48
Half Marathon inc T-Shirt (+£12)
13.1mi
£54
Route information
The Hertfordshire Half Marathon & 10K returns for 2026, and registration is now OPEN! Taking place on Sunday 1st November, this exciting event is set in beautiful Old Knebworth, offering runners of all abilities a memorable race experience.
Both races feature undulating, scenic road routes through the picturesque Hertfordshire countryside. Whether you're tackling the Half Marathon or the 10K, you'll enjoy a welcoming race-day atmosphere, excellent support from marshals, and clear route markings. It's the perfect autumn challenge for seasoned runners aiming for a new PB or first-timers stepping up their distance.
Half Marathon map here
Distances: 21.1m
Elevation: 218m, Road (undulating)
10k map here
Elevation: 92m, Road (undulating)
What's included
- Finisher's Medal
- Chip-timed results
- Marshalled course
- Aid station
- Bag drop
- Free event photography
How to get there
Old Knebworth Ln, Knebworth, UK
Get full directionsPARKING/TRAVEL
There will be free parking on site. Please arrive early as there may be queues on arrival. As with all major events, there may be delays on leaving the car park after the event.
Event day logistics
09:00 am - Half Marathon start
09: 30 am - 10k start
12:00 - Race End
MINIMUM AGES
Half Marathon - 17 years and above
10k - 15 years and above
BAGGAGE
We will have a secure marquee where you can leave your baggage. We recommend you bring as little baggage as possible. Your baggage tag is attached to your race number, you simply tear it off and attach to your bag. To collect, show your number to our staff and they will help you find your baggage.
TOILETS
There will be portable toilets in the event village and on course for the Half Marathon runners.
REFRESHMENTS
There will be sufficient water provided on the course, and there will also be water available at the finish along with your post race goodies and medal.
RESULTS
Results will be available here immediately after the race.
PICTURES
We will have an official photographer at the event, please check out our photos page after the race.
SOCIAL MEDIA
To stay up to date with everything from RunThrough, make sure to follow us on all our social media pages and if you would like to hear more from us via email make sure to sign up to our newsletter via the RunThrough.co.uk homepage.
Make sure to tag us in any pictures or videos that you post and the best ones will be featured on our pages!
FAQs
How can I access my results for the Hertfordshire Half Marathon & 10k?
Results will be available on www.runthrough.co.uk after the race.
Will there be a bag drop at the Hertfordshire Half Marathon & 10k?
Yes, there will be a bag drop facility at this event. All bags and belongings will be left with a volunteer marshal. It is advised to not leave valuables in your bag.
How old do I need to be to enter the Hertfordshire Half Marathon & 10k?
10k runners must be 15 years of age or older and Half Marathon runners must be 17 years of age or older.
Reviews
This event currently has no reviews, why not be the first? You could help someone find their perfect event.
Early bird entry - ends soon
Price increases soon
Download our app
Smiths Building, Lower Ground Floor, 179 Great Portland St,
London, W1W 5PL
Reg number 10083277
