Seaside Marathon
Ventura's Seaside Marathon offers a flat, oceanfront Boston Qualifier course with ample swag.
Race Date
Jun 7, 2026
Location
Ventura, CA
Quick facts
- Date
- Sunday, June 7, 2026
- Location
- Ventura, California
- Distance
- Half marathon (13.1 mi) + 26.2M, 10K, 5K run
- Course
- Loop Course
- Terrain
- Road
- USATF certified
- Not listed
- Finishers on record
- 3,456
Highlights
Good For
Atmosphere
Course
The Experience
The Seaside Marathon in Ventura, California, presents a flat, oceanfront course that has been certified as a Boston Qualifier. Runners can expect a straightforward race day experience, with the event first being held in 2013 and now in its 11th edition.
The course runs along the oceanfront, offering coastal views. With minimal elevation gain and loss, it's designed to be a fast course, appealing to those seeking a personal best or a Boston Marathon qualifying time. The race typically attracts runners from around 7 states.
While the race aims to provide value with over $100 worth of swag, runner feedback suggests potential organizational challenges. The median field size has been around 122 finishers, with a recent trend of shrinking participation.
Race-provided description
Welcome to the Seaside Marathon, all flat oceanfront Boston Qualifier course in Ventura CA. All runners receive over $100 worth of race day swag!
Course Info
Course Type
Loop Course
Terrain
road
Scenery
Coastal
Surface
Paved
Difficulty
Ultra-Flat
Net Drop/km
0 m (Flat)
Separation
0.0%
Also Offers
Course Map
Quality Score
Solid Pick4911 years running
~122 finishers a year
shrinking
1% returning runners
2 timing sources
runners from 7 states
winner 1:23:04
typical high 68°F
Race Day Weather
5-year historical avgStart (Low)
57°
Afternoon (High)
68°
Pleasant conditions — light layers at start, comfortable by finish
0.0"
Precipitation
10 mph
Wind
83%
Humidity
Historical Finish Times
How 3,456 finishers actually crossed the line across 11 years.
Most recent
2025
Total finishers
3,456
Median time
2:10:11
Latest turnout
112
States
43
Turnout by year
2016–2025
Hover the histogram to inspect specific finish times.
Race Photos
Frequently asked
When is the Seaside Marathon?
The Seaside Marathon is held on Sunday, June 7, 2026.
Where does the Seaside Marathon take place?
It takes place in Ventura, California.
What distances does the Seaside Marathon offer?
The half marathon (13.1 miles), plus 26.2M, 10K, 5K run.
Is the Seaside Marathon course flat and good for a PR?
The Seaside Marathon is a ultra-flat, loop course course.
How many people run the Seaside Marathon?
HalfRuns has finish records for 3,456 runners who have completed the Seaside Marathon.
HalfRuns editorial — independent, no paid placement.
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