Portland Marathon
Race Day Weather
Cool start, warming up gradually
Runners will face temperatures starting at 48°F and rising to 64°F by race end, with an average humidity of 68%. Light wind from the WSW will provide a tailwind in the early miles but shift to headwinds from miles 7-19, requiring pacing adjustments. Runners should consider starting conservatively and stay hydrated, especially as temperatures rise. No significant rain is expected, but a throwaway layer may be useful during the wait before the gun.
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Race Info
The Portland Marathon is held on the first Sunday of October in Portland, Oregon. It offers a full marathon (42.195 km / 26.219 mi), a half marathon (21.098 km / 13.110 mi), and a 10K. The course starts and ends at Tom McCall Waterfront Park at Salmon Street and Naito Parkway, crossing the Willamette River four times and passing through downtown, the Pearl District, and other Portland landmarks. The marathon is a USATF-certified Boston qualifier, and the 2026 race drew nearly 15,000 participants across all events. Wikipedia
