Races
Beacons Way Ultra 100km
Wales, July. 100 km on 70% trail. +18,684 ft of climbing. 21 hours cutoff.
- Start1,611 ft
- High2,824 ft
- Low184 ft
- Finish2,018 ft
- Wales at mile 0.0
- Beacons Way Ultra 100km mile 12 at mile 12, cutoff 4.2 hours
- Beacons Way Ultra 100km mile 25 at mile 25, cutoff 8.4 hours
- Beacons Way Ultra 100km mile 37 at mile 37, cutoff 12.6 hours
- Beacons Way Ultra 100km mile 50 at mile 50, cutoff 16.8 hours
- Finish Wales at mile 62, cutoff 21 hours
Geometrycourse math
Weather at the cruxcourse math
At hour 11 of race, feels like 20 C (70 F).Sample of 7 race days, medium confidence.At hour 11 of race, apparent temperature P90 is 20 C / 68 F.
The cruxMoorland bogs, steep fells, and night navigation on unmarked paths (near mile 40)
Course DNA
The Course
Beacons Way Ultra 100km runs 100 km through Wales. +18,684 ft gain and -18,278 ft loss. Surfaces skew 70% trail / 20% path / 10% road. Moorland bogs, steep fells, and night navigation on unmarked paths. High point near 2,923 ft. Low near 164 ft. July temps run 40°F to 70°F. The course rewards patience early and punishes rushed descents after mile 31.
The Work
Train for 18,684 feet of climbing across 100 km. Back-to-back long runs on trail. Practice power-hiking grades above 15 percent. 21 hours total means limited margin: rehearse fueling every 45 to 60 minutes and downhill eccentric work weekly. Technicality 6/10. Build a block that simulates the crux near mile 40.
Kit
July in Wales: plan for 40°F to 70°F. Mandatory shell if rain is in forecast. Headlamp with spare batteries if 21 hours pushes past dark. Poles help on sustained climbs above mile 16. Vest capacity for 2 liters minimum. Shoes matched to 70% trail: lugs for mud, rock plate if the course turns technical after mile 31.
Race Day
Hold effort through mile 16. The field often splits on the first big climb after mile 31. Moorland bogs, steep fells, and night navigation on unmarked paths near mile 40 is where time is won or lost. Walk the steep pinches. Run the flats and gentle downhills. Crew at major aids: socks, calories, ice if hot. Transitions under 5 minutes when possible. Final third is 21 miles of fatigue management. Finish with reserve for the last descent.
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