Kachess Ridge 50 50M — 2026 — Course Map, Elevation Profile & Aid Stations

Course map, elevation profile & surface

Distance

49.4mi

Elev gain

10,273ft

Elev loss

10,370ft

High point

5,794ft

Low point

2,356ft

Effective oxygen

81–92%of sea level

Surface

59% trail

Drawing the course…

The course file didn’t load.Usually a hiccup. The stats above are still right.

Race-day light

In the dark

Sunrise

6:11am

Sunset

8:06pm

Headlamp from

Not needed

For a 11:00 finish (an estimate) · starting 7:00 AM Aug 22. Dark means the sun below civil twilight.

Climbs

8 climbs · 9,664 ft totalbiggest first

Pick a climb to find it on the profile and the map.

Elevation gain, measured two ways

Source	Gain	vs lidar
Course file (GPX)	10,273ft	-10%
USGS lidar, 1 m	11,374ft	reference

They differ because a GPS file picks up noise on every wiggle and often takes its heights from a coarse terrain model, while lidar maps the ground itself to about a metre. We sampled this route every 98 ft against USGS 3DEP and counted each rise of 10 ft or more, on Oct 24, 2026. The planner still uses the course file.

Aid stations as published on the course file

Aid station	Mile	km
Start	0.0	0.0
A Hard Cheese Aid	6.2	9.9
A Knox Creek Aid	9.4	15.1
A Thorp Creek Aid	14.6	23.4
A Course Marshall	23.4	37.7
A No Name Ridge Aid	31.9	51.3
A Cooper Aid	38.5	62.0
Finish	49.3	79.4

Badge colours match the markers on the map above — always confirm locations and cutoffs with the race organizer.

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Nobody from Kachess Ridge 50 50M — 2026 has checked this course yet — it’s built from what the race published. Ask them to:Email your race director

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Conditions typical race-day weather for Aug 22 at the start

Typical high

74°F

Typical low

53°F

Chance of rain

2025 high

85°F

Typical = the median of 2016–2025 for Aug 22 ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.

Race almanac 1 year of this race

Past editions

On race day it reached 70°F at the start, with a low of 57°.

Year	Start °F	High point °F	Rain	Wind
2026 Aug 22	70°/57°	64°/46°	dry	11mph

Next race day Sat, Aug 21, 2027 · 7:00 AM start

First lightsunrise 6:10 am

5:37am

Last lightsunset 8:08 pm

8:41pm

Moonwaning gibbous, up from 9:22 pm

78% lit

First and last light are civil twilight, the sun 6° below the horizon. The moon is lit as at midnight after the start; headlamp hours count a typical finish from the start while the sun is below civil twilight. Worked out for the start line.

race-day weather from the Open-Meteo historical archive (ERA5) at the start line and the course high point (5,794 ft).

Reviews what runners who have been there say

No reviews yet — be the first to run it and tell other runners what to expect.

About this course

Kachess Ridge 50 50M — 2026 covers 49.4 mi (79.5 km) with 10,273 ft of elevation gain through Washington, United States. That is about 208 ft per mile of climbing, and 10,370 ft of descent. The course tops out at 5,794 ft and bottoms out at 2,356 ft. The surface is 59% trail, 40% gravel and 1% paved. There are 6 aid stations on course; the longest stretch between aid is 10.9 mi. The profile has 8 sustained climbs; the biggest is the climb to Hard Cheese Aid, +2,569 ft over 5.5 mi at 8.9% on average (steepest stretch 25%). Race day is August 22, 2026, starting at 7:00 AM; the sun rises at 6:11 AM and sets at 8:06 PM. Typical race-day weather at the start: a high of 74°F and a low of 53°F, with a 9% chance of a wet day. The interactive map above shows the full route with its elevation profile and aid stations, built from the course's GPS file.

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