Races
Beacons Way Ultra 100 Mile
Wales, July. 100 mi on 70% trail. +30,705 ft of climbing. 40 hours cutoff.
- Start249 ft
- High2,811 ft
- Low199 ft
- Finish1,611 ft
- Wales at mile 0.0
- Beacons Way Ultra 100 Mile mile 20 at mile 20, cutoff 8 hours
- Beacons Way Ultra 100 Mile mile 40 at mile 40, cutoff 16 hours
- Beacons Way Ultra 100 Mile mile 60 at mile 60, cutoff 24 hours
- Beacons Way Ultra 100 Mile mile 80 at mile 80, cutoff 32 hours
- Finish Wales at mile 100, cutoff 40 hours
Geometrycourse math
Weather at the cruxcourse math
At hour 11 of race, feels like 20 C (69 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 65)
Course DNA
The Course
Beacons Way Ultra 100 Mile runs 100 mi through Wales. +30,705 ft gain and -29,344 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 50.
The Work
Train for 30,705 feet of climbing across 100 mi. Back-to-back long runs on trail. Practice power-hiking grades above 15 percent. 40 hours total means limited margin: rehearse fueling every 45 to 60 minutes and downhill eccentric work weekly. Technicality 5/10. Build a block that simulates the crux near mile 65.
Kit
July in Wales: plan for 40°F to 70°F. Mandatory shell if rain is in forecast. Headlamp with spare batteries if 40 hours pushes past dark. Poles help on sustained climbs above mile 25. Vest capacity for 2 liters minimum. Shoes matched to 70% trail: lugs for mud, rock plate if the course turns technical after mile 50.
Race Day
Hold effort through mile 25. The field often splits on the first big climb after mile 50. Moorland bogs, steep fells, and night navigation on unmarked paths near mile 65 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 33 miles of fatigue management. Finish with reserve for the last descent.
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