Early bird price release!
Early bird entry - ends soon
Hertfordshire Half Marathon & 10k November 2026
Sun, Nov 1, 2026
Old Knebworth Ln, Knebworth
£38
EARLY BIRD PRICE
LIMITED TIME OFFER
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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.
10k, Half Marathon and Charity
View details
Sun, Nov 1, 2026
View logistics
Knebworth, United Kingdom
View location
Where and when
Location
Old Knebworth Ln, Knebworth, UK
Start times
10k: 9:30 AMHalf Marathon: 9:00 AM
Event summary
Here are the distances available for Hertfordshire Half Marathon & 10k November 2026
10k
10km
£38
Half Marathon
13.1mi
£45
Charity
£80
10k
10km
£38
Half Marathon
13.1mi
£45
Charity
£80
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.
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Early bird entry - ends soon
Price increases soon
33 Broadwick St, London W1F 0DQ
Reg number 10083277
