Hertfordshire Half Marathon
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Event overview
The Hertfordshire Half Marathon & 10K takes place on Sunday 1 November 2026 at Old Knebworth Lane, Knebworth, UK. The event is organised by RunThrough and uses road routes through the Hertfordshire countryside. Both courses are described as undulating and scenic. The organiser highlights sustainability as a priority for the event.
Race details
- Half Marathon
- 10K
The half marathon course lists an elevation of 218 m and the 10K lists an elevation of 92 m. Both races are on road surfaces. Cut-off times are given as 3 hours for the half marathon and 1.5 hours for the 10K. Each kilometre on the course is marked with distance flags and marshals will guide runners along the route.
Entries include a themed medal, chip-timed results, post-race goodies, and free race photos. The event features a race village with food and drink options and partner-provided free items at the finish. A discounted event t-shirt (more than 30% off) is available as an add-on at entry through the organiser’s kit partner. Route maps and further event logistics are provided by the organiser for participants. Visit the organization's website for the most recent information.
