Date
Sun, 12 Sept 2027
Venue
Brecon Beacons (Bannau Brycheiniog), Wales
Countdown
September
Routes
2
Distances
71-109km
Climb, 109 km
2,800m
No queen climb to pace for. The Brecon Beast is death by a thousand ascents, a relentless stack of Welsh mountain climbs over open moorland and rocky byways in the Bannau Brycheiniog.
Create a free training plan for the Brecon Beast
7-day free trial, no card required
The course
The route
A single big loop: 109km with roughly 2,800m of climbing, plus a shorter 71km option. Sustained mountain ascents, boggy moorland traverses and rocky byways, with no trail centre in sight.
Weather
Mid-September, Brecon Beacons (Bannau Brycheiniog)
17°CTypical high
9°CTypical low
2°CColdest in 20 years
50%Days with rain
Highs around 17°C and lows around 9°C, but it has dropped to 2°C. Rain on 50% of days.
NASA POWER data, 2006-2025, the week either side of race day
Training
Training for the Brecon Beast
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.icuA stack of mountain climbs
Typical sessions
Relentless climbing with no single decisive ascent, held repeatable across 6 to 10 hours
The hardest climbing waiting on tired legs in the final third
Exposed, shelterless moorland where wind, rain and low cloud bite hardest
Rocky byways and boggy tracks that punish thin tyres and reward handling
What your weeks look like
Typical sessions
Sustained Climb Intervals: 3x15min at 85 to 90% FTP on a climb, ridden fresh then tired
A Peak Mountain Ride building to 5 to 6hr with 2,000m+ of climbing, your best single predictor
Back-to-back weekends, a long Saturday then a climbing Sunday, to ride on cumulative fatigue
Fuelling rehearsal at 60 to 90g of carbs an hour, practised on the climbs where eating feels worst
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 Brecon Beast plan.
7-day free trial, no card required.
