Mare Island Half Marathon
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Event overview
The Mare Island Half Marathon, 10K and 5K takes place on June 28, 2026 on Mare Island in Vallejo, CA. The event is presented by iRecreate, LLC and hosted at Mare Island Brewing Co., Coal Sheds. All distances stay entirely on Mare Island and highlight waterfront and historic areas of the island.
Distances
- Half Marathon
- 10K
- 5K
- Kid’s 0.5K Dash
Courses
The half marathon route stays on Mare Island, passes the historic naval yard on the east side, climbs to the island’s highest point with views of San Pablo Bay, Mt. Diablo, and Mt. Tamalpais, and runs past the Old Admiral housing and along the San Pablo Bay Trail on the western edge. The half includes paved and unpaved sections. The 10K passes through the Admiral housing area and along the San Pablo Bay Trail before looping back to the waterfront. The 5K runs by the Old Admiral housing and is noted as suitable for running strollers. The Kid’s 0.5K Dash is an out-and-back course of 250 meters each way around a historic shipyard crane; parents are encouraged to accompany children ages 6 and under. Every young runner receives a shirt and finisher medal.
Awards and registration perks
Pre-registered participants receive a race t-shirt and a finisher medal. There is a post-race celebration at Mare Island Brewing Co. Overall and age group awards are given to the top three finishers in each division when a division has at least five registrants. Age groups are: under 20, 20-29, 30-39, 40-49, 50-59, and 60+.
Packet pickup and location
Packet pickup is at Mare Island Brewing Co. – Coal Sheds, 850 Nimitz Ave, Vallejo, CA 94592. Pickup is offered on the two days before the event and on race day. Visit the organization's website for the most recent information.
