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Knebworth House, Old Knebworth Lane, Knebworth, Hertfordshire, United Kingdom
The Hertfordshire Half Marathon & 10K takes place at Knebworth House on Sunday 1 November 2026 and supports Garden House Hospice Care. Both distances start and finish on the forecourt/grounds of Knebworth House and use traffic‑free, road‑closed sections and surrounding country lanes to create a scenic autumn route. The event is aimed at a wide range of abilities and is promoted as a well‑marshalled race with water stations and finish‑line support.
Runners can expect chip timing and themed finisher medals, on‑site event village facilities and event partners supporting the day. The course highlights Knebworth Park and nearby rural roads and is presented as a traffic‑free experience staged at the historic Knebworth House venue. Entrants are advised to consult the official event pages for the athlete guide, exact start waves and any additional logistics or ticketing information.
