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Hertfordshire Half Marathon & 10K
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Hertfordshire Half Marathon & 10K

When
Sunday 1 November
9:00 – 11:30 · 1 more date
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Price
£42–50
RunThrough lists the 10K at £42 and the Half Marathon at £50, plus a 5% booking fee; it also lists a £80 charity option plus 5%. Minimum ages are 15 for the 10K and 17 for the Half Marathon. Garden House Hospice Care’s separate charity signup charges £18 including a Team Garden House technical T-shirt, requires a second registration step with Run for Charity and a minimum £250 fundraising pledge, and closes at midnight on 20 October 2026. That route lists age 17+ and portal slots as 09:00–11:00 for the 10K and 09:00–12:00 for the Half Marathon; RunThrough’s event schedule gives the race starts below.
Where
Knebworth House
Knebworth House, Old Knebworth Lane, Stevenage, SG1 2AX
DirectionsMore at this venue

About

Two closed-road races start outside Knebworth House: the Half Marathon at 09:00 and the 10K at 09:30, on undulating routes through the park and surrounding village.

RunThrough stages the Hertfordshire Half Marathon and 10K from Knebworth House. The 21.1 km Half Marathon and 10K follow undulating closed-road routes through the park and surrounding village. Entries include a themed medal, chip-timed results, race photos, post-race goodies and bag drop. Garden House Hospice Care also offers a charity registration route for this same race, with separate registration and fundraising terms.

All dates · 2

November 2026
1
Sun
9:00 – 11:30
1
Sun
9:30 – 12:00

Tags

10khalf marathonroad running

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Also at Knebworth House

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Listed on ghhospicecare.org.uk, runthrough.co.uk. Details can change, so check with the organiser before you go.

£42–50RunThrough lists the 10K at £42 and the Half Marathon at £50, plus a 5% booking fee; it also lists a £80 charity option plus 5%. Minimum ages are 15 for the 10K and 17 for the Half Marathon. Garden House Hospice Care’s separate charity signup charges £18 including a Team Garden House technical T-shirt, requires a second registration step with Run for Charity and a minimum £250 fundraising pledge, and closes at midnight on 20 October 2026. That route lists age 17+ and portal slots as 09:00–11:00 for the 10K and 09:00–12:00 for the Half Marathon; RunThrough’s event schedule gives the race starts below.
Details · ghhospicecare.org.uk