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Washington > Black Diamond Half Marathon
Enumclaw, WA  •  Sunday, September 14, 2014  •  Course Map

Part of a two-day festival of events that takes place at Enumclaw's Nolte State Park, on the western edge of the Cascade Mountain range, and includes a half iron triathlon and an endurance duathlon on Saturday, the Black Diamond Half Marathon takes runners on a scenic, rural course through the area considered the gateway to Mount Rainier National Park.

Consisting of both paved and dirt roads and run with few hills throughout the race, the course runs along mostly quiet country roads and finishes along a dirt trail that circles Deep Lake in the center of Nolte State Park. Runners will start the race at 9:05 AM local time.

This small half marathon event -- just under 50 runners crossed the finish line in the half marathon at the event's 2013 running -- takes place just a 40-minute drive from Seattle, and due to the limited parking available within Nolte State Park, bus transportation will be provided to ferry participants to and from the race from nearby Enumclaw.

Race Weather & Climate

Located in Washington state's northwest corner, about 40 miles southeast of downtown Seattle and roughly six miles southwest of Nolte State Park, Enumclaw typically sees some of its mildest weather of the year in September, which has brought record temperatures here as low as 29°F (in 1983) and as high as 97°F (in 1988).

September Avg. Day of Race Monthly Precip.
Low: 46°F Low: 47°F Rain: 2.4 in.
High: 71°F High: 72°F Snow: 0 in.

Course Map

See the map for the Black Diamond Half Marathon

Starting Time

9:05 AM


$60 for the half marathon, if registered by August 27, 2014
$65 between Aug. 28 - September 11
$70 on Sept. 12 and after


To reserve your spot in the late summer 2014 running of Enumclaw's Black Diamond Half Marathon, register online at SignMeUp.com.

Official Race Website


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SEE ALSO: 12-, 16- and 20-Week Half Marathon Training Plans
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