Date
Sat, 7 Nov 2026
Start
08:30
Venue
Henderson Hall, Talybont-on-Usk, Powys
Brecon, Powys
Countdown
November
A full marathon that takes in Cribyn and Pen y Fan. 1,300 m of climbing makes this a proper mountain day, not a quick road-style 42 km.
Key facts
0110-hour cut-off: you must finish by 18:30
02Minimum age 18 on race day
Create a free training plan for the Beacons Ultra, Beacons Marathon & Beacons Half Marathon 42 km
7-day free trial, no card required
The course
The route
Brecon
Distance42km
Total climb1,319m
StartElevation
0 kmDrag map to rotate42.1 km
Weather
Early-November, Brecon
10°CTypical high
5°CTypical low
-3°CColdest in 20 years
65%Days with rain
Highs around 10°C and lows around 5°C, but it has dropped to -3°C. Rain on 65% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
2023 results
Who finishes, and how
#RiderTimeAvg speed
01Emma HOGBEN04:48:448.8 km/h
02Alissa ELLIS04:54:498.6 km/h
03Jen DAFFIN05:21:007.9 km/h
24
Women finishers
6:07:19
Median time
6.9 km/h
Median speed
Women · 2023 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
Training
Training for the Beacons Ultra, Beacons Marathon & Beacons Half Marathon 42 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 Beacons Ultra, Beacons Marathon & Beacons Half Marathon 42 km plan targets
Typical sessions
42 km with 1,319 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
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Get your Beacons Ultra, Beacons Marathon & Beacons Half Marathon 42 km plan.
7-day free trial, no card required.
Other races at Beacons Ultra, Beacons Marathon & Beacons Half Marathon
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