Races
Cypress Hills. Sulphur Springs hundred. Thirteen thousand feet. Prairie wind never quits.
Geometrycourse math
The cruxNight coulee miles in prairie wind (near mile 65)
Course DNA
Sulphur Springs runs 100 mi through Canada. Surfaces skew 80% trail / 20% dirt road. Night coulee miles in prairie wind. High point near 909 ft. Low near 436 ft. May temps run 35°F to 75°F. The course rewards patience early and punishes rushed descents after mile 50.
Train for the climbing across 100 mi. Back-to-back long runs on trail. Practice power-hiking grades above 15 percent. 30 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.
May in Canada: plan for 35°F to 75°F. Mandatory shell if rain is in forecast. Headlamp with spare batteries if 30 hours pushes past dark. Poles help on sustained climbs above mile 25. Vest capacity for 2 liters minimum. Shoes matched to 80% trail: lugs for mud, rock plate if the course turns technical after mile 50.
Hold effort through mile 25. The field often splits on the first big climb after mile 50. Night coulee miles in prairie wind 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.
Results
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