Date
Sat, 24 Jul 2027
Start
07:30
Venue
Plas y Brenin, Capel Curig
Capel Curig, Conwy
Countdown
July
The big day out in Snowdonia: 40 km and 2,430 m of mountain running, with real scrambling and cut-offs that keep you honest.
Key facts
01Cut-offs at Ogwen Cottage and the Llewelyn junction
02Minimum age 18, with mountain-running experience on rough terrain
03Compulsory kit and navigation provisions required
Create a free training plan for the Ogwen | Yr Helgi Du 40 km
7-day free trial, no card required
The course
The route
Capel Curig
Distance40km
Total climb2,430m
StartElevation
0 kmDrag map to rotate38.9 km
Weather
Late-July, Capel Curig
18°CTypical high
12°CTypical low
7°CColdest in 20 years
60%Days with rain
Highs around 18°C and lows around 12°C, but it has dropped to 7°C. Rain on 60% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
Training
Training for the Ogwen | Yr Helgi Du 40 km
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 Ogwen | Yr Helgi Du 40 km plan targets
Typical sessions
40 km with 2,430 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 Ogwen | Yr Helgi Du 40 km plan.
7-day free trial, no card required.
Other races at Ogwen | Yr Helgi Du
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