Dog Lake Half Marathon

Saturday, October 10, 2020 • Dog Lake, WA • Course Map

Few running race courses can offer the kind of scenery like that found at Washington state’s Dog Lake Half Marathon, which unfolds along a fast downhill route that starts in the Cascade range of the Snoqualmie National Forest, about 2 1/2 hours from Seattle.

With snow-capped mountain peaks all around, runners start the race near the stop sign at the Dog Creek Campground exit along Highway 12, just south of the lake known as Dog Lake.

From there, the course starts off first with a fast downhill stretch that lasts for the first few miles, taking runners east along Highway 12 in the direction of Rimrock Lake and Clear Lake.

Runners head onto the south shoulder along Highway 12, which they’ll follow for the next five miles until they reach Tieton Reservoir Road. There, they turn right and follow the road as it winds its way around Clear Lake, the start of a mostly flat stretch that lasts for the remainder of the race, after the downhill stretch at the beginning. The finish line lies at Silver Beach Resort near the western end of Rimrock Lake, near Trout Lodge.

The net elevation loss for the half marathon is more than 1,200 feet between the starting and finish lines — it’s about 2,000 feet for the full marathon, which drops from about 4,250 feet at the start to about 2,250 feet at its lowest point — and runners should expect to run the first five miles about a minute faster than their normal race pace, organizers note.

Runners also are encourage to wear brightly colored clothing especially if they’re running the full marathon, as the course will open to auto traffic at the Rimrock Tunnel section of the race, which occurs in the 26.2-mile course.

Most of the race takes place on paved asphalt roads, though about two miles in the stretch around Clear Lake are run on a combination gravel-and-dirt forest road.

Race Weather & Climate

Nestled among the Cascade Mountains of southern Washington state, about 110 miles southeast of Seattle, White Pass ski resort (the nearest weather station to Dog Lake) typically sees cool to sometimes mild (but often cold) weather in October, which has brought record temperatures here as low as 15°F (in 2002) and as high as 80°F (in 1988).

On race day (Oct. 10), the average low is 34ºF and the average high is 44ºF.

Past Results

Course Map

See the race route map for the Dog Lake Half Marathon here.

Starting Time

9:00 AM


$65 and up for the half marathon


To reserve your spot in the 2020 running of the Dog Lake Half Marathon, register online at here.

Official Race Website


Ever run in the Dog Lake Half Marathon? Share your impressions here, or post your review in the Comments below.

See more races in: October, Washington

1 comment… add one
  • Michal July 29, 2017, 10:22 am

    The Dog Lake marathon website is not working.


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