Hertfordshire Half Marathon & 10k
Below are the key details about the running event along with a Google map & search link. Spot any mistakes or missing info? Use the 'Report' button below.
- When
- 01 Nov 2026
- Distances
- 10K, Half Marathon
- Location
- Knebworth, Hertfordshire
- Terrain
- Trail
About Hertfordshire Half Marathon & 10k
Trail running through Knebworth Country Park forms the backbone of this November event, which offers both a half marathon and 10k option on the same morning. The half marathon starts at 9:00am with the 10k following 30 minutes later, both routed across the Hertfordshire countryside north of London near Stevenage.
The courses are marked with mile markers, arrows and marshals to guide runners, with water stations positioned along the way. Race packs are posted to entrants ahead of the event, and the venue is accessible by car from junction 7 of the A1(M) with free parking available, or by train to nearby Stevenage station.
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