Gloucester Half Marathon & 10k presented by trek

The Gloucester Half Marathon & 10k presented by trek is a city‑centre running event organised by RunThrough and listed under the Gloucester Running Festival. The 2026 edition takes place on Sunday 22 March 2026 with both races starting and finishing at Gloucester Park. The event is held in support of Sue Ryder and features event branding from trek and a number of local partners. It is promoted as a closed‑road race that celebrates Gloucester city and its landmarks.

The courses offer a scenic tour of pedestrianised city‑centre streets, pass by Gloucester Cathedral and extend out towards Quedgeley using a closed‑road circuit and the Gloucester & Sharpness Canal Path. Entries include chip timing, a themed finisher medal and free official race photography, with post‑race refreshments provided. The organiser emphasises a festival atmosphere and accessible routes for both the half marathon and the 10K distance.