Humboldt Bay Marathon
The Humboldt Bay Marathon offers a fast, flat course with a strong community feel.
Race Date
Aug 9, 2026
Location
Eureka, CA
Quick facts
- Date
- Sunday, August 9, 2026
- Location
- Eureka, California
- Distance
- Half marathon (13.1 mi) + 26.2M
- Course
- Point to Point
- Terrain
- Road
- USATF certified
- Yes
- Finishers on record
- 1,140
Highlights
Good For
Atmosphere
Course
The Experience
First run in 2018, the Humboldt Bay Marathon is now in its 8th edition, drawing runners from across the country to Eureka, California. This USATF-certified course is renowned for its flat profile, making it a prime location for achieving personal bests. The race is a nonprofit affiliate of the Road Runners Club of America, dedicated to promoting fitness and outdoor recreation in Humboldt County.
With a median field size of around 142 finishers, the event boasts a growing trend and a loyal following, with approximately 22% of participants returning in subsequent years. Runners can expect typical race-day temperatures between 53–65°F, contributing to a comfortable racing environment. The event also includes a half marathon and a Beer Mile, catering to a variety of running interests.
The Humboldt Bay Marathon aims to provide a uniquely beautiful running experience, whether you're chasing a new record or simply enjoying the scenery. Its focus on community and outdoor activity makes it a standout event for runners seeking a well-organized and scenic race.
Race-provided description
--> Register Home --> Home Race Information --> Race Information Marathon Half Marathon High School Runners Volunteer Information Volunteers (Adult) Volunteers (Student) Pace Team Event Schedule Road Closures Perfect Weather Lodging Transportation Sponsors About Us Artwork Board of Directors Contact Us Our Title Sponsor 2026 Humboldt Bay Marathon Races August 9, 2026 - Join us for the 11th Running! Click Here to Register! Humboldt Bay Marathon is a nonprofit affiliate of the Road Runners Club of America. Our goals are to promote fitness, outdoor recreation and trails in Humboldt County. Whether you are striving for another personal record or just looking for a uniquely beautiful place to run, the Humboldt Bay Marathon, Half Marathon and BeerMile races are exactly what you're looking for! 2
Course Info
USATF CertifiedCourse Type
Point to Point
Terrain
road
Scenery
Coastal, Lake River
Surface
Paved
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.3%
Also Offers
USATF Certified Course
CA25023TEB · 2025 Humboldt Bay Half Marathon
Relatively flat with minimal net elevation change. Loop course — start and finish are close together.
Quality Score
Standout788 years running
~142 finishers a year
growing or steady
22% returning runners
USATF certified · 3 timing sources · 6 photos
runners from 1 state
winner 1:16:33
typical high 65°F
Race Day Weather
5-year historical avgStart (Low)
53°
Afternoon (High)
65°
Pleasant conditions — light layers at start, comfortable by finish
0.0"
Precipitation
8 mph
Wind
90%
Humidity
Historical Finish Times
How 1,140 finishers actually crossed the line across 8 years.
Most recent
2025
Total finishers
1,140
Median time
2:05:05
Latest turnout
142
States
20
Turnout by year
2015–2025
Hover the histogram to inspect specific finish times.
Race Photos
Frequently asked
When is the Humboldt Bay Marathon?
The Humboldt Bay Marathon is held on Sunday, August 9, 2026.
Where does the Humboldt Bay Marathon take place?
It takes place in Eureka, California.
What distances does the Humboldt Bay Marathon offer?
The half marathon (13.1 miles), plus 26.2M.
Is the Humboldt Bay Marathon course flat and good for a PR?
The Humboldt Bay Marathon is a ultra-flat, point to point course. The course is USATF-certified, so finish times can be used for qualifying.
How many people run the Humboldt Bay Marathon?
HalfRuns has finish records for 1,140 runners who have completed the Humboldt Bay Marathon.
HalfRuns editorial — independent, no paid placement.
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