Hertfordshire Half Marathon

NOV

1

2026

The Hertfordshire Half Marathon & 10k returns to Old Knebworth in November 2026. Runners can choose between the scenic half marathon or 10K road routes through the countryside. The event supports Garden House Hospice Care and includes a themed medal and chip timing.

Sun 1 Nov 2026

Knebworth, East of England

Registration

Half Marathon 10 kilometers

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Hertfordshire Half Marathon & 10k

The Hertfordshire Half Marathon & 10k takes place on Sunday, 1st November 2026 in Old Knebworth, Hertfordshire. The event is organized in support of the charity Garden House Hospice Care.

The event offers two distances: a half marathon (21.1 km) and a 10K. Both courses are road routes described as undulating and scenic, passing through the Hertfordshire countryside. The half marathon has an elevation gain of 218 meters, while the 10K has an elevation gain of 92 meters.

The half marathon starts at 09:00, and the 10K starts at 09:30. There is a time limit of 3 hours for the half marathon and 1.5 hours for the 10K.

Entry includes a unique themed medal, chip timing, post-race refreshments, and free race photographs. The course features kilometer markers and marshals along the route. Visit the organization's website for the most recent information.

Half Marathon

10 km

10k