4 Castles Series
Always double-check with the organizer's website! This page may contain affiliate links.
4 Castles Series 2027
The 4 Castles Series is a set of four half marathons held in Wales during 2027 and organised by Run Wales. The 2026 series sold out and the 2027 series is open for registration. The organiser states an interest-free payment option and a price match promise on entry fees.
The series comprises four half marathons:
- Snowdonia Half Marathon - 9 May 2027
- Bangor Half Marathon - 13 June 2027
- Caernarfon Half Marathon - 12 September 2027
- Conwy Half Marathon - 14 November 2027
Entrants to the full series pay a single series fee. Discount codes cannot be applied to the series entry; discount codes may be used on individual races but will not qualify an entrant for the series completion medal. Each race awards a large bespoke medal and a technical T-shirt. Completing the series also earns a large bespoke golden medal.
A time limit applies during each race: every mile must be completed in under 15 minutes. Failure to meet this pace will result in elimination after the third mile. Race day details and specific local information are provided on the individual race pages. Visit the organization's website for the most recent information.
