Races

Ouray 100

Ouray, ColoradoJuly

Ouray. San Juan shale, mine ruins, steep couloirs. Bridge of Heaven is the last 5,000 feet.

102.1 mi+28,934 ft-28,934 ft52 hours7,689 ft to 12,763 fttech 6/10Checkpoints per race bookout-and-backsFort PeabodyJuly
Distance102.1 mi
Gain+28,934 ft
Loss-28,934 ft
Altitude7,689 ft to 12,763 ft
Technicality6/10
Air25°F to 85°F
Gradient profileCalTopo course map
  • Start7,689 ft
  • High12,763 ft
  • Low7,689 ft
  • Finish7,689 ft

Terrain

trail50%jeep45%paved5%

Field, 2025 · 13-year samplescraped

Starters157
Finish rate52%
Median46:59
Fastest29:19

Geometryderived

Steepest drop2,280 ft-20.2% over 2.1 mi
Night miles34 misunset near 19:00 local
Time over 12k ft12%

Weather at the cruxderived

At hour 7 of race, feels like 22 C (74 F).Sample of 7 race days, medium confidence.

Course records

Men26:05:23Zac Marion2014 scraped
Women26:46:20Courtney Dauwalter2014 scraped

The cruxBridge of Heaven. 5,000 feet of shale above treeline. (near mile 66)

Course DNA

The Course

Ouray 100 runs 102.1 mi through Ouray, Colorado. +28,934 ft gain and -28,934 ft loss. Surfaces skew 50% trail / 45% jeep / 5% paved. Bridge of Heaven. 5,000 feet of shale above treeline.. High point near 12,763 ft. Low near 7,689 ft. July temps run 25°F to 85°F. The course rewards patience early and punishes rushed descents after mile 51.

The Work

Train for 28,934 feet of climbing across 102.1 mi. Back-to-back long runs on trail. Practice power-hiking grades above 15 percent. 52 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 66.

Kit

July in Ouray, Colorado: plan for 25°F to 85°F. Mandatory shell if rain is in forecast. Headlamp with spare batteries if 52 hours pushes past dark. Poles help on sustained climbs above mile 26. Vest capacity for 2 liters minimum. Shoes matched to 50% trail: lugs for mud, rock plate if the course turns technical after mile 51.

Race Day

Hold effort through mile 26. The field often splits on the first big climb after mile 51. Bridge of Heaven. 5,000 feet of shale above treeline. near mile 66 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 34 miles of fatigue management. Finish with reserve for the last descent.

Results

Ouray 100 finish lines.

Winner: Ted Bross, 29:19:13.

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Train for Ouray 100

Course-specific plan, fuel segments, gear kit, and race morning for Ouray 100.

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Ouray 100

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