Caernarfon Half Marathon Set for September 6, 2026, the Caernarfon Half Marathon invites runners to experience a breathtaking journey around this historic Welsh town. The race begins and concludes next to the awe-inspiring Caernarfon Castle, offering participants stunning views of its medieval architecture. The course itself is designed with both scenic beauty and challenging terrain in mind. You'll encounter several small climbs followed by exhilarating downhill stretches that provide opportunities for speed and enjoyment. This half marathon is not just a race but an immersive journey through the heart of Caernarfon, where history meets modern athletics. Race Day Details: - Start Time: 10 AM - Entry Fee Promise: We ensure competitive pricing by matching or undercutting leading organizers.
The event offers quality finisher medals and technical t-shirts to all participants. Race HQ opens at 8 AM for number collection, chip pick-up, and any race day inquiries. Course Rules: Each mile must be completed in under 15 minutes; otherwise, runners will face elimination after the third mile due to time constraints imposed by road re-opening schedules. Participants should park in designated public car parks within town. Follow signs or simply look up for Caernarfon Castle as a clear landmark from most locations. It's important to avoid parking near the start/finish line. Water stations are placed approximately every three miles along with one at the finish, ensuring runners stay hydrated throughout their run. Portaloos and public toilets will be available around the starting area. Medical support is provided by professionals stationed at key points including the start and finish lines as well as on course. Runners must complete a medical history form attached to their race number for proper care in case of emergencies during or after the event. For runners who choose to withdraw, returning your timing chip to Race HQ (avoiding congestion near the finishing area) is crucial. Inform nearby marshals if you plan not to return to the finish line so we can account for your absence and ensure safety measures are followed accordingly. Finishers will receive a bespoke medal and technical t-shirt upon completion of their race, with prize presentations scheduled around 12:15 PM for top male/female overall winners along with first-place age group awards. Merchandise such as hoodies ordered online can be collected from the merchandise tent before or after your run. The route map is accessible at [plotaroute.com/route/2381531](https://www.plotaroute.com/route/2381531?units=miles), and results will be posted on Run Wales' website later in the day. Photos from the event can also be found online. In line with UK Athletics rules, headphones are prohibited except for bone-conducting models to ensure safety during this non-closed road race environment. Litter disposal must adhere strictly to guidelines set by organizers; improper waste management could result in disqualification and removal of results. Join us at the Caernarfon Half Marathon for an unforgettable blend of sport and heritage, where every step brings you closer not just to your personal best but also to appreciating one of Wales' most cherished landmarks.
Races Offered
Caernarfon Half Marathon
Sep 06, 2026
straighten
Distance —
21.1K
terrain
Type —
Running
timer
7 days remaining
sell
£46.00
Weather History
These values represent the 3-year monthly averages for September in Caernarfon.
thermostatTemperature
11.8° / 17.4°
wb_sunnyFeels like
9.0° / 15.0°
light_mode
Avg sunshine hours
7h 12m
water_drop
Avg rainfall
5.9 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
16.4 km/h (Gentle breeze)
opacity
Sweat loss rate
Low
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (3.5)
humidity_mid
Humidity
83.5%
wb_twilight
Sunrise
06:51
nightlight
Sunset
19:30
About Caernarfon
Learn more about the host city, Caernarfon.
Caernarfon is a Royal town in Gwynedd, North-West Wales.
Caernarfon is famous for its breathtaking castle and as a stronghold of the Welsh language. The castle and fortified complex is recognised on the UNESCO World Heritage List as one of the finest examples of late 13th-century and early 14th-century military architecture in Europe. It is one of the best places in the world to hear a living Celtic language, with over 80% of the local population speaking Welsh.