The 2026 event has concluded.

2026 Napa Valley Marathon Results

Napa Valley Marathon

Napa, CA, USA · March 1, 2026

55°·63° high·Breezy·Dry

Race Day Weather

55°at start

64° high

Breezy

Dry

Cool temperatures, strategic wind shifts

Runners will face a temperature range from 55°F to 64°F, with average humidity at 84%. Wind will be a factor, offering a tailwind from miles 2 to 3, followed by crosswinds and headwinds in the later miles, particularly tough from 24 to 27. Competitors should plan for hydration and pacing adjustments, especially in the final miles where headwinds may slow them down.

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 PM

4 PM

Pre-raceRace windowPost-race

Pace Calculator

Distance: 26.2mi

Target Finish Time

0:00:00

HH:MM:SS

Pace

—

Weather Adj.

—

Common Goals:

Get forecast alerts for Napa Valley Marathon

We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.

Race Info

The Napa Valley Marathon is an annual marathon, half marathon, and 5K in Napa County, California. The USATF-certified marathon course begins in Calistoga at the northwestern tip of Napa County, and then traverses the Silverado Trail, ending in downtown Napa. The race's course is primarily rolling hills or flat as it moves through rural California Wine Country. The Napa Valley Marathon has been run in March since 1979, accepts only about 3,000 runners, and is widely considered one of the most scenic marathons in the United States. The men's and women's winners of the race win their weight in wine. Wikipedia

Website

FAQ

When is the 2026 Napa Valley Marathon?

The 2026 Napa Valley Marathon will be held on Sunday March 1, 2026.

Is the Napa Valley Marathon a Boston Marathon Qualifier?

Yes, the Napa Valley Marathon is an official Boston Marathon qualifier.

What is the time limit for the Napa Valley Marathon?

The time limit for the Napa Valley Marathon is 6 hours.

What will the weather be like for the 2026 Napa Valley Marathon?

The forecast calls for a high of 64°F and a low of 54°F with a 0% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 25 years of data

Avg Temp

59°F

L:48° H:59°

RunScore

Conditions

Rain Freq

52%

13 of 25 yrs

Wind12mph

Dew45°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 Napa Valley Marathon Partly cloudy throughout the day with early morning rain. 2025	50°/58°	-	44°
2024 Napa Valley Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2024	45°/53°	Light	42°
2023 Napa Valley Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2023	46°/53°	Light	37°
2022 Napa Valley Marathon Clear conditions throughout the day. 2022	40°/60°	-	40°
2020 Napa Valley Marathon Partly cloudy throughout the day. 2020	46°/59°	-	35°
2019 Napa Valley Marathon Partly cloudy throughout the day with afternoon rain. 2019	54°/58°	Light	53°
2018 Napa Valley Marathon Clearing in the afternoon. 2018	34°/53°	-	38°
2017 Napa Valley Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2017	44°/51°	Light	38°
2016 Napa Valley Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2016	52°/59°	Light	47°
2015 Napa Valley Marathon Clear conditions throughout the day. 2015	43°/60°	-	39°
2014 Napa Valley Marathon Partly cloudy throughout the day with afternoon rain. 2014	53°/59°	Light	53°
2013 Napa Valley Marathon Clearing in the afternoon. 2013	52°/65°	-	49°
2012 Napa Valley Marathon Clear conditions throughout the day. 2012	48°/71°	-	45°
2011 Napa Valley Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2011	54°/57°	Light	53°
2010 Napa Valley Marathon Clear conditions throughout the day. 2010	47°/61°	-	49°
2009 Napa Valley Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2009	52°/55°	Light	52°
2008 Napa Valley Marathon Clear conditions throughout the day with a chance of rain throughout the day. 2008	52°/66°	Light	25°
2007 Napa Valley Marathon Partly cloudy throughout the day. 2007	52°/66°	-	46°
2006 Napa Valley Marathon Cloudy skies throughout the day with rain. 2006	49°/55°	Light	41°
2005 Napa Valley Marathon Clear conditions throughout the day with morning rain. 2005	46°/67°	Light	52°
2004 Napa Valley Marathon Clear conditions throughout the day with early morning rain. 2004	48°/69°	-	52°
2003 Napa Valley Marathon Clear conditions throughout the day with morning rain. 2003	42°/60°	-	43°
2002 Napa Valley Marathon Partly cloudy throughout the day with rain. 2002	46°/57°	-	45°
2001 Napa Valley Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2001	52°/57°	Light	49°
2000 Napa Valley Marathon Cloudy skies throughout the day with a chance of rain throughout the day. 2000	47°/48°	Light	44°

More CA Races

Quicksilver 100K & 50K

2026-05-09 · San Jose, CA, USA

San Lorenzo River Marathon

2026-07-11 · Santa Cruz, CA, USA

Wild West Marathon & Ultra

2026-05-02 · Lone Pine, CA, USA

Golden Gate Trail Run Marathon

2027-02-06 · Rodeo Beach, CA, USA

Saddleback Marathon

2026-11-07 · Lake Elsinore, CA, USA

Miwok 100K

2026-05-02 · Stinson Beach, CA, USA