All UK half marathonsHalf Marathons / England
Grafham Water Trail Half Marathon
Grafham · East of England
Organised by Race Harborough
Grafham Water Trail Half Marathon is a trail half-marathon event in Grafham.
Past edition
11 October 2026
Surface: Trail
- Published distance
- Half Marathon
Entry status: closed
Fixed-distance half marathon
Start: Grafham
Race area · approximate race area. Approximate race area. Check the organiser’s website for the exact start and race-day directions.
Location evidence
Existing saved event-to-place evidence reused; geography query derived from 'Grafham'. GeoNames exact settlement/suburb name match for 'Grafham', country England, administrative area Cambridgeshire, region East of England; population 0 (zero means unspecified). Representative event-area point, not a venue address, exact start or radius guarantee. Directional catalogue locations use the first disclosed event locality only as EVENT_AREA; other route endpoints are not substituted. Geographic lookup does not reverify dates or non-location facts. GeoNames (https://www.geonames.org/), CC BY 4.0; transformed to event-area coordinates with separate event-source evidence.
Location checked 2026-09-14.
Official date, half option, entries open and Marlow Park start.
Official date, half option, entries open and Marlow Park start.
Sources checked 14 September 2026. Entry availability can change.
Official sources
Upcoming edition
10 October 2027
Surface: Trail
- Published distance
- Half Marathon
Entry status: open
Fixed-distance half marathon
Race area · approximate race area. Approximate race area. Check the organiser’s website for the exact start and race-day directions.
Location evidence
Existing saved event-to-place evidence reused; geography query derived from 'Grafham'. GeoNames exact settlement/suburb name match for 'Grafham', country England, administrative area Cambridgeshire, region East of England; population 0 (zero means unspecified). Representative event-area point, not a venue address, exact start or radius guarantee. Directional catalogue locations use the first disclosed event locality only as EVENT_AREA; other route endpoints are not substituted. Geographic lookup does not reverify dates or non-location facts. GeoNames (https://www.geonames.org/), CC BY 4.0; transformed to event-area coordinates with separate event-source evidence.
Location checked 2026-09-14.
The current organiser explicitly lists this individual half marathon option. The event-specific organiser page announces 2027-10-10 and offers entry for this distance. No previous-edition price, route metrics or cutoff are inherited.
Field-scoped review 2026-10-28: The event-specific organiser page announces 2027-10-10 and offers entry for this distance. No previous-edition price, route metrics or cutoff are inherited. Unverified edition-specific facts remain unknown.
Sources checked 28 October 2026. Entry availability can change.
Official sources
Map precision: approximate event venue/locality. Existing saved event-to-place evidence reused; geography query derived from 'Grafham'. GeoNames exact settlement/suburb name match for 'Grafham', country England, administrative area Cambridgeshire, region East of England; population 0 (zero means unspecified). Representative event-area point, not a venue address, exact start or radius guarantee. Directional catalogue locations use the first disclosed event locality only as EVENT_AREA; other route endpoints are not substituted. Geographic lookup does not reverify dates or non-location facts. GeoNames (https://www.geonames.org/), CC BY 4.0; transformed to event-area coordinates with separate event-source evidence.
Organiser event page (opens in a new tab)