Coal Miner

SEP
12
2026
A self-navigated mountain ultramarathon around Roslyn, WA, featuring a 51.3-mile route with over 10,000 feet of climb, minimal aid, required satellite tracking, and finish verification by GPX and summit selfies.
Sat 12 Sep 2026
100 miles 51 kilometers

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Coal Miner, Roslyn, WA

The Coal Miner is a backcountry trail ultramarathon based at Roslyn Pioneer Park. The primary advertised route is 51.3 miles with between 10,100 and 11,300 feet of climb, depending on mapping software. The course links Cle Elum Ridge with Sasse Ridge, summits Hex, Sasse and Jolly Mountains, descends Jolly Creek to the Middle Fork of the Teanaway River, follows toward the West Fork of the Teanaway River, then uses the Big Sandy Trails to return to Cle Elum Ridge and Roslyn.

Distances:

  • 50 Miler
  • 100 Miler

The event emphasizes self-reliance. There are no course markings and aid is minimal; water and basic caloric offerings are available at aid stations. GPX tracks are provided before the event and participants must preload them into their map app and use them for navigation. Aid stations listed on the route include Corral Creek (mile 9.9), Sasse Ridge (mile 19.3), Middle Fork (mile 33.3) and West Fork (mile 38.6). There are cutoffs at an intermediate aid station and at the finish.

Entry requirements include naming a completed hard-trail 100k or longer and carrying an inReach or similar satellite messenger with an active subscription. Official finish verification is contingent on submitting a complete GPX track and required summit selfies. The start is at the southeast corner of Roslyn Pioneer Park where the Coal Mines Trail enters the woods; a bathroom is adjacent to the start. The organizer offers a full refund if the entrant is not completely satisfied. Visit the organization's website for the most recent information.

100 mi
100 Miler
51 km
50 Miler
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