MI
Mare Island Half Marathon
Race Date
Jun 28, 2026
Location
Vallejo, CA
Quick facts
- Date
- Sunday, June 28, 2026
- Location
- Vallejo, California
- Distance
- Half marathon (13.1 mi)
- Course
- Loop Course
- Terrain
- Road
- USATF certified
- Not listed
Course Info
Course Type
Loop Course
Terrain
road
Difficulty
Rolling Hills
Quality Score
Heritage2/20
1 year running
Size9/15
~70 finishers a year
Momentum5/5
growing or steady
Loyalty0/20
0% returning runners
Course & details3/15
2 timing sources
National draw0/10
runners from 1 state
Front-pack speed3/5
winner 1:22:58
Weather0/10
typical high 79°F
Race Day Weather
5-year historical avgStart (Low)
55°
Afternoon (High)
79°
Warm — hydration strategy is key, start conservatively
0.0"
Precipitation
13 mph
Wind
68%
Humidity
Frequently asked
When is the Mare Island Half Marathon?
The Mare Island Half Marathon is held on Sunday, June 28, 2026.
Where does the Mare Island Half Marathon take place?
It takes place in Vallejo, California.
What distances does the Mare Island Half Marathon offer?
The half marathon (13.1 miles).
Is the Mare Island Half Marathon course flat and good for a PR?
The Mare Island Half Marathon is a rolling hills, loop course course.
HalfRuns editorial — independent, no paid placement.
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