Portland Marathon

Portland, OR, USA · October 04, 2026

48°·61° high·Light·Dry

Weather

Race Day Weather

48°at start

65° high

Light

Dry

Cool conditions, mild breeze

Runners will face a steady temperature rise from 48°F to 63°F, with a mild wind from the SW at 6 mph. Humidity is relatively high at 71%, indicating a dew point of 45°F. Adjusting pace early and ensuring adequate hydration will be crucial for optimal performance.

Race day forecast available in 70 days

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Distance: 26.2mi

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Race Info

The Portland Marathon Presented by OHSU Health is an annual sporting event which takes place on the first Sunday of October in Portland, Oregon, first held in 1972. The race consists of a full marathon (42.195 kilometres (26.219 mi)) as well as a half marathon (21.098 kilometres (13.110 mi)). The race starts and ends at the Tom McCall Waterfront Park at Salmon Street and Naito Parkway, and includes several bridge crossings and multiple iconic landmarks in Portland. The field has reached over 10,000 runners. Wikipedia

Website

Course Map

FAQ

When is the 2026 Portland Marathon?

The 2026 Portland Marathon will be held on Sunday October 4, 2026.

Is the Portland Marathon a Boston Marathon Qualifier?

Yes, the Portland Marathon is an official Boston Marathon qualifier.

What will the weather be like for the 2026 Portland Marathon?

The forecast calls for a high of 69°F and a low of 48°F with a 12% chance of rain.

Historical Weather

Based on 24 years of data

Avg Temp

67°F

L:51° H:67°

RunScore

Conditions

Rain Freq

21%

5 of 24 yrs

Wind7mph

Dew49°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Portland Marathon Clearing in the afternoon. 2025	51°/71°	-	47°
2024 Portland Marathon Clear conditions throughout the day. 2024	47°/70°	-	48°
2023 Portland Marathon Clear conditions throughout the day. 2023	45°/66°	-	44°
2022 Portland Marathon Clear conditions throughout the day. 2022	57°/83°	-	54°
2021 Portland Marathon Partly cloudy throughout the day. 2021	46°/65°	-	47°
2019 Portland Marathon Clearing in the afternoon. 2019	46°/66°	-	46°
2017 Portland Marathon Partly cloudy throughout the day with rain clearing later. 2017	47°/61°	Light	48°
2016 Portland Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2016	55°/60°	Light	54°
2015 Portland Marathon Clear conditions throughout the day. 2015	50°/77°	-	49°
2014 Portland Marathon Clear conditions throughout the day. 2014	53°/78°	-	55°
2013 Portland Marathon Clear conditions throughout the day with morning rain. 2013	43°/71°	-	46°
2012 Portland Marathon Clear conditions throughout the day. 2012	44°/74°	-	33°
2011 Portland Marathon Cloudy skies throughout the day with early morning rain. 2011	55°/58°	-	53°
2010 Portland Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2010	57°/61°	Light	54°
2009 Portland Marathon Partly cloudy throughout the day with early morning rain. 2009	47°/58°	-	45°
2008 Portland Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2008	53°/57°	Light	52°
2007 Portland Marathon Cloudy skies throughout the day with rain. 2007	56°/66°	-	51°
2006 Portland Marathon Partly cloudy throughout the day. 2006	46°/63°	-	46°
2005 Portland Marathon Partly cloudy throughout the day. 2005	54°/63°	-	52°
2004 Portland Marathon Clearing in the afternoon. 2004	52°/67°	-	52°
2003 Portland Marathon Partly cloudy throughout the day. 2003	58°/65°	-	54°
2002 Portland Marathon Partly cloudy throughout the day. 2002	52°/61°	-	53°
2001 Portland Marathon Clear conditions throughout the day. 2001	54°/85°	-	49°
2000 Portland Marathon Cloudy skies throughout the day with rain clearing later. 2000	59°/63°	Light	53°