Races
France, August. Alpine trails. 123 km. Cutoff 40 hours. The cols come whether you are ready or not.
Geometrycourse math
Weather at the cruxcourse math
At hour 10 of race, feels like 33 C (92 F).Sample of 7 race days, medium confidence.At hour 10 of race, apparent temperature P90 is 33 C / 92 F.
The cruxHigh cols above 2,400 m and long stone descents (near mile 50)
Course DNA
Grand Raid des Pyrénées - Tour de Cirques runs 123 km through France. +30,010 ft gain and -33,524 ft loss. Surfaces skew 75% trail / 20% dirt road / 5% paved. High cols above 2,400 m and long stone descents. High point near 8,510 ft. Low near 2,283 ft. August temps run 32°F to 75°F. The course rewards patience early and punishes rushed descents after mile 38.
Train for 30,010 feet of climbing across 123 km. 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 50.
August in France: plan for 32°F to 75°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 19. Vest capacity for 2 liters minimum. Shoes matched to 75% trail: lugs for mud, rock plate if the course turns technical after mile 38.
Hold effort through mile 19. The field often splits on the first big climb after mile 38. High cols above 2,400 m and long stone descents near mile 50 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 25 miles of fatigue management. Finish with reserve for the last descent.
Results
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