Overview
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.
Saturday, May 3, 2025
Registration
Opens
TBD
Closes
TBD
Registration Fee
![](data:image/svg+xml,<svg display="block" role="presentation" viewBox="0 0 20 17" xmlns="http://www.w3.org/2000/svg"><g d="M 9.952 2.85 C 9.606 2.377 9.136 1.903 8.542 1.43 C 7.362 0.477 6.162 0 4.942 0 C 3.816 0 2.729 0.41 1.682 1.23 C -1.111 3.53 -0.571 6.913 3.302 11.38 C 5.242 13.607 7.459 15.607 9.952 17.38 C 12.452 15.607 14.672 13.607 16.612 11.38 C 20.486 6.913 21.022 3.53 18.222 1.23 C 17.176 0.41 16.092 0 14.972 0 C 13.752 0 12.549 0.477 11.362 1.43 C 10.996 1.723 10.649 2.047 10.322 2.4 L 9.952 2.85 M 2.442 2.17 C 3.269 1.523 4.102 1.2 4.942 1.2 C 5.882 1.2 6.836 1.59 7.802 2.37 C 8.289 2.763 8.682 3.16 8.982 3.56 L 9.952 4.87 L 10.922 3.56 L 12.102 2.37 C 13.069 1.59 14.026 1.2 14.972 1.2 C 15.799 1.2 16.632 1.523 17.472 2.17 C 18.366 2.903 18.792 3.783 18.752 4.81 C 18.692 6.47 17.576 8.51 15.402 10.93 C 13.836 12.67 12.019 14.323 9.952 15.89 C 7.886 14.323 6.069 12.67 4.502 10.93 C 2.329 8.51 1.212 6.47 1.152 4.81 C 1.126 3.777 1.556 2.897 2.442 2.17" fill="transparent" height="17.379999952316282px" id="AxX6s3ET9" width="19.984374960920544px"><path d="M 9.952 2.85 C 9.606 2.377 9.136 1.903 8.542 1.43 C 7.362 0.477 6.162 0 4.942 0 C 3.816 0 2.729 0.41 1.682 1.23 C -1.111 3.53 -0.571 6.913 3.302 11.38 C 5.242 13.607 7.459 15.607 9.952 17.38 C 12.452 15.607 14.672 13.607 16.612 11.38 C 20.486 6.913 21.022 3.53 18.222 1.23 C 17.176 0.41 16.092 0 14.972 0 C 13.752 0 12.549 0.477 11.362 1.43 C 10.996 1.723 10.649 2.047 10.322 2.4 L 9.952 2.85 M 2.442 2.17 C 3.269 1.523 4.102 1.2 4.942 1.2 C 5.882 1.2 6.836 1.59 7.802 2.37 C 8.289 2.763 8.682 3.16 8.982 3.56 L 9.952 4.87 L 10.922 3.56 L 12.102 2.37 C 13.069 1.59 14.026 1.2 14.972 1.2 C 15.799 1.2 16.632 1.523 17.472 2.17 C 18.366 2.903 18.792 3.783 18.752 4.81 C 18.692 6.47 17.576 8.51 15.402 10.93 C 13.836 12.67 12.019 14.323 9.952 15.89 C 7.886 14.323 6.069 12.67 4.502 10.93 C 2.329 8.51 1.212 6.47 1.152 4.81 C 1.126 3.777 1.556 2.897 2.442 2.17" fill="rgb(255, 0, 0)" height="17.379999952316282px" id="ql_EbdlRv" transform="translate(0 0)" width="19.984374960920544px"/></g></svg>)
