DateExpected
Late August 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
One Planet Adventure Visitor Centre, Coed Llandegla Forest, Llandegla, Wrexham
Llandegla, North Wales (loop)
Countdown
August
Five hundred kilometres of North Wales on a gravel or mountain bike, with no set start and nobody carrying your bags. It is a long, self-sufficient ride that ends with a group finish.
Key facts
01Fully self-supported: no support crews, private resupply or food caches
02Required kit: sleeping bag, tent or bivvy, waterproof jacket, insulation layer
03Also required: walkable shoes, front and rear lights, helmet. No e-bikes
Create a free training plan for the North Wales 400 500 km
7-day free trial, no card required
The course
The route
Llandegla
Distance500km
StartElevation
0 kmDrag map to rotate433.1 km
Weather
Late-August, Llandegla
18°CTypical high
11°CTypical low
6°CColdest in 20 years
49%Days with rain
Highs around 18°C and lows around 11°C, but it has dropped to 6°C. Rain on 49% of days.
NASA POWER data, 2006-2025, the week either side of race day
2025 results
Who finishes, and how
#RiderTimeAvg speed
01Tom Prebble01:21:37:0011.0 km/h
02Rob Young02:04:42:009.5 km/h
03Nikki Sommers02:07:01:009.1 km/h
3
Finishers
2d 4:42:00
Median time
9.5 km/h
Median speed
Overall · 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 North Wales 400 500 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 North Wales 400 500 km plan targets
Typical sessions
500 km
Endurance and fatigue resistance over the full distance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long endurance rides building toward the full distance
Threshold and sweet-spot work for sustained power
Group rides for drafting and bunch-riding skills
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 North Wales 400 500 km plan.
7-day free trial, no card required.
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