Hertfordshire Half Marathon & 10k

4.5 · 1 review

Knebworth House, Hertfordshire

Knebworth House, Old Knebworth Lane, Knebworth, UK

Sun 07th November 2021

Starting at 09:00

2 races

£28.00 - £34.00



All marshals and staff within the event and around the course will be issued with PPE and wear gloves and a mask for the duration of the event.

As many race packs will be posted out ahead of the event as possible and event communications will be sent via email in the lead up.

There will not be a formal baggage drop within the event village, please limit the number of belongings you bring to the event and leave anything in the car during the race to reduce contact between runners and staff. If this is not possible, please email info@runthrough.co.uk.

There will be multiple hygiene stations around the event with hand sanitiser for all runners.

You will see clear signage around the event village, please follow all signage and instructions from the marshals before, during and after the race.

There will be a manned, and clearly marked, medical hub within the event village.


The race will start in waves based on your estimated finish time, with the faster runners at the start and slower near the back to avoid any congestion and the need to overtake on course.

There will be an informal grab and go water station with sealed sports top bottles on the course, however we ask that you stay hydrated before the event and if you are able to please bring your own. Bottles and camelbacks are permitted.

If you need to overtake on the course please give a wide berth of at least 1 meter around any runners.

Spitting and nasal clearance during the race is not permitted.


Do not stop within the finish barriers. Please continue past the finish until you pass the medals and are in an open space.

We ask that once you have collected your medal and water to leave the event village as soon as possible to avoid groups congregating within the event village.

Run Through Events has provided covid-19 safety information for this event.

Organiser's Description

This popular road closed half marathon, now with a 10k option, starts and finishes in front of the iconic Knebworth House, with the course taking participants around the beautiful surrounding rural roads.

Knebworth House is a grade II listed house set in acres of beautiful gardens and parkland. Knebworth House has welcomed many music artists for major open air concerts, including Robbie Williams, Oasis, Led Zepellin and Red Hot Chilli Peppers. The grounds are home to popular tourist attractions including an adventure playground and dinosaur trail.


  • Half Marathon
  • 10k


  • Half Marathon
  • 10k
What's Included

Themed medal


Chip timing

Free parking


Course Details

Starting and finishing in front of the iconic Knebworth House, the route takes in the grounds of Knebworth Park before heading out to the surrounding country lanes.

This ROAD CLOSED course gives you the opportunity to enjoy the rural roads totally traffic free – this is the first mass participation event with closed roads staged at Knebworth House!

There will be mile markers, arrows and marshals along the course to keep you on track. There will be three water stations at miles 3.5, 7.5 & 10 as well as at the finish.


Knebworth House, Old Knebworth Lane, Knebworth, Hertfordshire SG3 6HQ

How To Get There

By Road:

Knebworth House & Park are accessed direct from the Junction 7 roundabout of the A1(M) motorway at Stevenage South, 29 miles North of London. There are signs on both carriageways of the motorway. If you are using a Sat Nav use the post code of the Stevenage Novotel at Junction 7 – SG1 2AX – not the Knebworth House post code.

By Rail:

The nearest rail station is Stevenage. There is a taxi rank at the station. Non-stop Inter-City and local services run to Stevenage station from London’s Kings Cross station around every 30 minutes. There are also frequent Inter-City connections on the East Coast main line from Cambridge, York, Leeds, Newcastle, Edinburgh and Glasgow.

There is plenty of free parking

Other Information

Start times:

Half Marathon - 9am
10k - 9:30am

All race packs will be posted out to entrants to arrive with each runner in the week of the event.

Headphones: No specific information around headphones has been provided by the organisers. If you do wear headphones whilst racing please ensure that you are able to hear other runners as well as the event officials to ensure everyone’s safety.

4.5 · 1 Review


·a year ago

Hilly. This one is in the grounds of Knebworth, you will be finishing outside the castle. The route is a little hilly, you will be running in and out of the grounds. Aim to be there earlier than a normal race due to the single track car entrance. There is car parking on site, which is a field of long grass. The goodie bag had to be THE best of all my half marathons, it included a large bag of bath salts, excellent! Crowd support is really only at the end.

Who's In

See who else is doing this event


Charlotte Potter

Chris Burstow

Stefanie Gransby

Steven Chow

Jack Styles


Fergus Powell

Gemma Worts

Ian Hands

James Barker

Matt Carney

Martine Moon

Natalie Henry-Oliver

Pearce Curran

Sarah Tahsin

Steven Simnett


Knebworth House, Hertfordshire

7 Nov 2021

£28.00 - £34.00