All UK half marathons

Half Marathons / England

ATW Watford Half Marathon

Watford · East of England

Organised by ATW

ATW Watford Half Marathon is a road half-marathon event in Watford.

Upcoming edition

7 February 2027

Surface: Road
Published distance
Half Marathon

Entry status: unknown

Fixed-distance half marathon

Start: Watford

Discovery area for this edition: Cassiobury Park Avenue, Watford

Race area · approximate postcode area. Approximate race area. Check the organiser’s website for the exact start and race-day directions.

Location evidence

Current half-inclusive event header and Location agree on Cassiobury Park Avenue; no exact start line inferred. Bounded residual official-page location check. Existing catalogue identity and current-edition eligibility retained; no dates or general source-check timestamp changed. Postcode representative point remains approximate. Postcodes.io postcode centroid: approximate postcode location, not exact start. Apply only to listed editions where applicability is explicitly bounded.

Event/venue postcode: WD18 7HF

Location checked 2026-09-14.

Half-specific closed-road route starts Cassiobury Park; 10k trail surface not copied.

Half-specific closed-road route starts Cassiobury Park; 10k trail surface not copied.

Sources checked 14 September 2026. Entry availability can change.

Official sources
Organiser event page (opens in a new tab)