You start at Hyak Sno-Park and run the Palouse to Cascades Trail on smooth, hard-packed gravel. The first half is mostly flat, with a short out and back, and you enter the Snoqualmie Tunnel near mile 13, where a headlamp or flashlight is required. The last 13 miles run steadily downhill and end at Garcia in North Bend, about 1,000 feet lower than the start. The course is USATF certified, the marathon starts at 6 a.m. with a six-and-a-half-hour cut-off, and shuttles return you to Hyak.
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Course
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