Caernarfon Half Marathon
Caernarfon's half starts and finishes beside its medieval castle, mixing town roads with rolling sections and a long downhill return to the finish.
Quick facts
- Start and finish beside Caernarfon Castle on the Menai waterfront.
- Rolling road course with smaller climbs and a longer downhill return.
- A fifteen-minute-per-mile pacing limit guides course support.
Is registration open for the 2026 Caernarfon Half Marathon?
Registration for the 2026 Caernarfon Half Marathon is open.
About the Caernarfon Half Marathon
Run Wales stages this North Wales half marathon from Caernarfon's waterfront, with the castle and town center forming the setting for the race hub.
Course
The road course leaves and returns to the castle area. Small climbs shape the outward miles before a longer downhill section helps runners work back toward Caernarfon.
Race-day weather
Early September in North Wales can be mild, breezy, and wet. Exposed roads may feel cool in rain even when the town finish is sheltered.
Past Caernarfon Half Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Sunday, September 6, 2026 | Upcoming | — |
| 2025 | — | Completed | Open results |
Caernarfon Half Marathon FAQ
When is the Caernarfon Half Marathon?
The 2026 Caernarfon Half Marathon is on Sunday, September 6, 2026.
Is registration open for the 2026 Caernarfon Half Marathon?
Registration for the 2026 Caernarfon Half Marathon is open. View the official registration details at runwales.com.
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