Date
Sat, 6 Feb 2027
Start
09:00
Venue
Course and HQ just outside Crickhowell, Powys, in the Black Mountains, Wales
Course and HQ just outside Crickhowell, Powys, in the Black Mountains, Wales
Countdown
February
A 12-hour timed run on a gentle 4.2-mile loop near Crickhowell. Lap after lap, you chase the clock rather than a distance, with the final lap run in reverse.
Key facts
01Minimum age 17
02Each of the first 11 laps must be finished within an hour
03The 12th and final lap is a race run in the reverse direction
Create a free training plan for the Trails & Tarmac 12hr BYU - Winter
7-day free trial, no card required
The course
One lap, on repeat
Course and HQ just outside Crickhowell · one lap
Total climb87m
Duration12hr
Start · finishOne lap · elevation
0 kmDrag map to rotate6.7 km
2024 results
Who finishes, and how
#RiderTimeGap
01Sian Stevens3:05:36
02Helen Brown6:02:30
03Tina Willison6:24:35
12
Women finishers
8:37:54
Median time
Women · 2024 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
OrganiserLimitless Trails (Ellen Wood, event contact and race director)
Websitelimitlesstrails.co.uk
Instagram@limitlesstrails
Running since2024
Training
Training for the Trails & Tarmac 12hr BYU - Winter
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 Trails & Tarmac 12hr BYU - Winter plan targets
Typical sessions
A sustained 12hr effort
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 Trails & Tarmac 12hr BYU - Winter plan.
7-day free trial, no card required.
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