Mare Island Half Marathon
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Mare Island Half Marathon, 10K and 5K
The Mare Island event takes place on Sunday, June 28, 2026 and is presented by iRecreate, LLC. The day is hosted at Mare Island Brewing Co., Coal Sheds, on Mare Island in Vallejo, CA. All distances remain entirely on Mare Island and highlight waterfront and historic shipyard areas.
Distances
- Half Marathon
- 10K
- 5K
- Kid's 0.5K Dash
The half marathon route moves through the historic naval yard on the island’s east side, climbs to the island’s highest point with views of San Pablo Bay, Mt. Diablo and Mt. Tamalpais, and runs along the San Pablo Bay Trail on the western edge. The course includes paved and unpaved sections. The 10K passes the Admiral housing area, follows a scenic stretch along the San Pablo Bay Trail and returns to a waterfront finish. The 5K goes by the Old Admiral housing and is laid out to accommodate running strollers. The Kid’s 0.5K is an out and back around a historic shipyard crane; parents are encouraged to accompany children ages six and under because parts of the course run near the waterfront. Every young runner receives a shirt and a finisher medal.
Pre registered participants receive a race shirt and finisher medal, and there is a post race celebration at Mare Island Brewing Co. Overall and age group awards are given to the top three finishers in divisions with at least five registrants. Age groups include under 20, 20-29, 30-39, 40-49, 50-59 and 60 plus. Packet pickup is located at Mare Island Brewing Co. - Coal Sheds, 850 Nimitz Ave, Vallejo, CA. Note that minor course changes may be made to support site revitalization and runner safety. Visit the organization's website for the most recent information.
