Date
Sat, 10 Jul 2027
Start
08:00
Venue
Llanberis Event Village/Event Field, beside the Community Centre, Llanberis, LL55 4UR
Llanberis, Gwynedd
Countdown
July
The short one of the Snowdonia weekend. A 10 km loop out of Llanberis with 400 m of climbing, a friendly way to get a taste of the trails here.
Key facts
01Minimum age 17
02Mandatory kit: trail shoes, drinking water and a charged mobile phone
03Course cut-off is 2h30
Create a free training plan for the Snowdonia Trail Marathon Eryri 10 km
7-day free trial, no card required
The course
The route
Llanberis
Distance9.8km
Total climb400m
StartElevation
0 kmDrag map to rotate9.9 km
Weather
Early-July, Llanberis
17°CTypical high
13°CTypical low
11°CColdest in 20 years
55%Days with rain
Highs around 17°C and lows around 13°C, but it has dropped to 11°C. Rain on 55% 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 Snowdonia Trail Marathon Eryri 10 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 Snowdonia Trail Marathon Eryri 10 km plan targets
Typical sessions
10 km with 400 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
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 Snowdonia Trail Marathon Eryri 10 km plan.
7-day free trial, no card required.
Other races at Snowdonia Trail Marathon Eryri
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