Date
Sat, 25 Sept 2027
Start
06:45
Venue
Caernarfon Castle, Caernarfon
Caernarfon, Gwynedd
Countdown
September
Start at Caernarfon Castle and finish at Rhyd Ddu, with Yr Wyddfa in between. A fully waymarked point-to-point that runs from the sea to the summit.
Key facts
01Must be over 18 on the day of registration
023mph cut-offs apply along the route
03Shorter summit route available from Pit Stop 2
Create a free training plan for the Yr Wyddfa Sea To Summit
7-day free trial, no card required
The course
The route
Caernarfon
Distance47km
Total climb1,707m
StartElevation
0 kmDrag map to rotate45.9 km
Weather
Late-September, Caernarfon
16°CTypical high
12°CTypical low
8°CColdest in 20 years
55%Days with rain
Highs around 16°C and lows around 12°C, but it has dropped to 8°C. Rain on 55% of days.
NASA POWER data, 2006-2025, the week either side of race day
2026 results
Who finishes, and how
#RiderTimeAvg speed
01Tom Davies05:07:209.2 km/h
02liam stacey06:10:237.6 km/h
03Dominic Gawden-Bone06:15:357.5 km/h
249
Finishers
9:06:27
Median time
5.2 km/h
Median speed
Overall · 2026 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
Training
Training for the Yr Wyddfa Sea To Summit
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Yr Wyddfa Sea To Summit plan targets
Typical sessions
47 km with 1,707 m of climbing
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Hill reps and vert to prepare the climbs and descents
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Yr Wyddfa Sea To Summit plan.
7-day free trial, no card required.
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