OC Marathon

Costa Mesa, CA, USA · May 3, 2026

59°·67° high·Breezy·Dry

Weather

Race Day Weather

59°at start

67° high

Breezy

Dry

Cool conditions, hydrate often

Runners will face temperatures starting at 58°F, rising to 68°F by the finish. Winds will be light at 9 mph from the SSW, with high humidity at 83%. It’s advisable for runners to hydrate frequently and consider a conservative pace, especially as the temperature climbs.

5 AM

6 AM

7 AM

8 AM

9 AM

10 AM

11 AM

12 PM

1 PM

2 PM

3 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 OC 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 HOAG ORANGE COUNTY MARATHON COURSE WILL START IN FRONT OF OUR OFFICIAL START LINE HOTEL, VEA NEWPORT BEACH A MARRIOTT RESORT & SPA, JUST SOUTH OF SANTA BARBARA DRIVE. YOU WILL RUN THROUGH THE BEAUTIFUL COASTAL COMMUNITIES OF NEWPORT BEACH, COSTA MESA AND SANTA ANA FINISHING OFF AT THE OC FAIR AND EVENT CENTER CONVENIENTLY LOCATED JUST OFF THE 55 FREEWAY IN THE HEART OF COSTA MESA. Source

Website

Course Map

FAQ

When is the 2026 OC Marathon?

The 2026 OC Marathon will be held on Sunday May 3, 2026.

Is the OC Marathon a Boston Marathon Qualifier?

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

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

The forecast calls for a high of 67°F and a low of 57°F with a 1% chance of rain. Check our detailed hourly forecast above for the best marathon race plan.

Historical Weather

Based on 19 years of data

Avg Temp

67°F

L:57° H:68°

RunScore

Conditions

Rain Freq

11%

2 of 19 yrs

Wind10mph

Dew47°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

Year	Low / High	Rain	Dew Point
2025 OC Marathon Cloudy skies throughout the day. 2025	56°/64°	-	50°
2024 OC Marathon Clearing in the afternoon with early morning rain. 2024	57°/63°	-	43°
2023 OC Marathon Partly cloudy throughout the day. 2023	58°/66°	-	49°
2022 OC Marathon Clearing in the afternoon. 2022	60°/70°	-	52°
2019 OC Marathon Clearing in the afternoon. 2019	60°/68°	-	51°
2018 OC Marathon Partly cloudy throughout the day. 2018	60°/72°	-	54°
2017 OC Marathon Partly cloudy throughout the day with rain. 2017	51°/62°	Light	47°
2016 OC Marathon Partly cloudy throughout the day. 2016	58°/68°	-	52°
2015 OC Marathon Clearing in the afternoon. 2015	61°/69°	-	52°
2014 OC Marathon Partly cloudy throughout the day. 2014	62°/77°	-	54°
2013 OC Marathon Cloudy skies throughout the day. 2013	61°/65°	-	51°
2012 OC Marathon Clearing in the afternoon. 2012	59°/68°	-	53°
2011 OC Marathon Clear conditions throughout the day. 2011	57°/83°	-	18°
2010 OC Marathon Clearing in the afternoon. 2010	57°/66°	-	47°
2009 OC Marathon Partly cloudy throughout the day. 2009	61°/67°	-	53°
2008 OC Marathon Cloudy skies throughout the day. 2008	58°/64°	-	51°
2007 OC Marathon Clear conditions throughout the day. 2007	47°/76°	-	34°
2006 OC Marathon Partly cloudy throughout the day. 2006	47°/64°	-	46°
2004 OC Marathon Partly cloudy throughout the day with a chance of rain throughout the day. 2004	52°/55°	Light	44°