All UK half marathons

Half Marathons / Wales

Snowdonia Trail Half Marathon Eryri

Llanberis · Wales

Organised by Always Aim High Events

Snowdonia Trail Half Marathon Eryri is an individual half-marathon event in Llanberis.

Series: Snowdonia Trail Marathon Eryri

Upcoming edition

11 July 2027

Surface: Trail
Published distance
approximately 21km

Entry status: unknown

Fixed-distance half marathon

Start: Llanberis

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

Location evidence

Reused existing evidenced geographic point for exactly the same named event venue/locality and country. Separate saved event-to-place evidence retained; no shared exact start inferred. Conflicting reusable points excluded; unrelated town-only event postcodes excluded. Original geographic verification timestamp retained separately; non-location race facts not reverified. Reused geographic point originally checked 2026-09-14T11:07:18.472Z.

Location checked 2026-09-14.

Official organiser-designated trail half marathon; published distance retained without implying road certification.

Half-specific date 11 July 2027, not festival range or 10K date. Organiser labels revised approximately 21km mountain course a half marathon.

Sources checked 14 September 2026. Entry availability can change.

Official event (opens in a new tab)
Official sources

Map precision: approximate event venue/locality. Reused existing evidenced geographic point for exactly the same named event venue/locality and country. Separate saved event-to-place evidence retained; no shared exact start inferred. Conflicting reusable points excluded; unrelated town-only event postcodes excluded. Original geographic verification timestamp retained separately; non-location race facts not reverified. Reused geographic point originally checked 2026-09-14T11:07:18.472Z.

Organiser event page (opens in a new tab)