DateExpected
Early November 2026
Based on past editions. We'll confirm when the organiser announces.
Venue
Newborough Forest, Newborough, Anglesey
Niwbwrch, Ynys Môn
Countdown
November
The full half marathon on the trails of Anglesey, one loop out of Niwbwrch. Run since 2019, with a generous three hours to get round.
Key facts
01Minimum age 17
023-hour cut-off for the single loop
03Results ranked by sex and age group
Create a free training plan for the Anglesey Trail Half Marathon 21 km
7-day free trial, no card required
The course
The route
Niwbwrch
Distance21km
StartElevation
0 kmDrag map to rotate21.4 km
Weather
Early-November, Niwbwrch
13°CTypical high
10°CTypical low
4°CColdest in 20 years
69%Days with rain
Highs around 13°C and lows around 10°C, but it has dropped to 4°C. Rain on 69% of days.
NASA POWER data, 2006-2025, the week either side of race day
2025 results
Who finishes, and how
#RiderTimeAvg speed
01Dom Searle1:36:5513.1 km/h
02Eleanor Ashcroft1:40:4212.6 km/h
03Laura Jarman1:41:4012.5 km/h
118
Women finishers
2:19:51
Median time
9.1 km/h
Median speed
Women · 2025 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
Training
Training for the Anglesey Trail Half Marathon 21 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 Anglesey Trail Half Marathon 21 km plan targets
Typical sessions
21 km
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
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Get your Anglesey Trail Half Marathon 21 km plan.
7-day free trial, no card required.
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