Timberline Marathon
Race Day Weather
Comfortable temps, light wind
Runners will face a temperature trend starting at 58°F and rising to 67°F. Winds will be light from the WNW, while humidity remains low at 40%. With mild conditions, pacing should remain steady, allowing for a strong finish without the need for major adjustments.
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Race Info
The Timberline Marathon circles Timothy Lake twice on the shoulders of Mount Hood, a singletrack trail course at roughly 3,000 feet in Oregon's Cascades. The route crosses the Timothy Lake dam and several rustic bridges before finishing near the historic Clackamas Lake Ranger Station. It runs every June alongside a 14.4 mile half marathon offered on both Saturday and Sunday. Negative Split organizes the race under a special-use permit with the Mt. Hood National Forest.
