The McDonald Forest 50K is a beloved Pacific Northwest trail classic that has challenged runners for nearly three decades. Hosted by the Corvallis Area Trail Runners, this race winds through the rolling, forested hills of Oregon State University’s research forest, where moss-draped trees, fern-lined singletrack, and sweeping ridge views set the stage for an unforgettable day on the trails.
Expect a course that blends runnable stretches with demanding climbs, weaving together the wild beauty of Starker Forests and McDonald-Dunn Research Forest. Whether you are chasing a personal best, testing your endurance for the first time at the ultra distance, or soaking up the lively community vibe, the McDonald Forest 50K is the perfect spring adventure. Friends, family, and volunteers make this race special, cheering from aid stations and gathering at Cronemiller Lake to celebrate every finisher.
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