Races

Waldo

OregonAugust

Oakridge, Oregon. Waldo hundred k. Eight thousand five hundred feet. Waldo Lake country.

62 mi+15,712 ft-15,712 ft18 hours4,826 ft to 7,776 fttech 5/106 stationsWaldo LakeCascade foothillsWSER qualifierAugust
Distance62 mi
Gain+15,712 ft
Loss-15,712 ft
Altitude4,826 ft to 7,776 ft
Technicality5/10
Air45°F to 85°F
Gradient profileCalTopo course map
  • Start5,131 ft
  • High7,737 ft
  • Low4,865 ft
  • Finish5,131 ft
Aid stations6 stops verified

Field, 2026 · 24-year sampleresults

Starters151
Finish rate87%
Median15:12
Sub-24131

Geometrycourse math

Steepest drop1,273 ft-12.9% over 1.9 mi
Night miles16 misunset near 19:00 local

Course records

Men9:05:42David Laney2013 results
Women10:21:04Marci Klimek2023 results

The cruxOlympic National Forest climb to Waldo Lake (near mile 40)

Course DNA

The Course

Waldo runs 100 km through Oregon. +15,712 ft gain and -15,712 ft loss. Surfaces skew 85% trail / 15% forest road. Olympic National Forest climb to Waldo Lake. High point near 7,776 ft. Low near 4,826 ft. August temps run 45°F to 85°F. The course rewards patience early and punishes rushed descents after mile 31.

The Work

Train for 15,712 feet of climbing across 100 km. Back-to-back long runs on trail. Practice power-hiking grades above 15 percent. 18 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 40.

Kit

August in Oregon: plan for 45°F to 85°F. Mandatory shell if rain is in forecast. Headlamp with spare batteries if 18 hours pushes past dark. Poles help on sustained climbs above mile 16. Vest capacity for 2 liters minimum. Shoes matched to 85% 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. Olympic National Forest climb to Waldo Lake 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.

Results

Waldo finish lines.

Train for your race

Train for Waldo

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

Train for WaldoCheck your readiness

Official siteBack to racesPredict your timeTrain for this raceCheck readinessFoot care plan

Sources (3)

Waldo

TrainReadiness