Mare Island Half Marathon
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Event Overview
The Mare Island Half event takes place on Mare Island in Vallejo, California, on Sunday, June 28, 2026. The event is hosted by Mare Island Brewing Co. at their Coal Sheds location.
Distances Offered
The event includes multiple distances:
- Half Marathon
- 10K
- 5K
- Kid’s 0.5K Dash
Course Details
All race courses remain entirely on Mare Island. The Half Marathon route explores the historic naval yard, climbs to the island's highest point, and passes by the Old Admiral housing and the San Pablo Bay Trail, featuring both paved and unpaved sections. The 10K passes through the Admiral housing area and runs along the San Pablo Bay Trail. The 5K route goes by the Old Admiral housing and is suitable for running strollers. The Kid’s 0.5K Dash is an out-and-back course around a historic shipyard crane; parents may accompany children aged 6 and under as the course is near the waterfront. The event organizer notes that minor course changes may occur due to ongoing island revitalization efforts.
Participant Perks
All pre-registered participants receive a race t-shirt and a finisher medal. A post-race celebration is held at Mare Island Brewing Co. Overall and Age Group awards are presented to the top three finishers in each division for the 5K, 10K, and Half Marathon, provided there are a minimum of five registrants in that division.
Race Day Information
Packet pickup is available at Mare Island Brewing Co. – Coal Sheds (850 Nimitz Ave, Vallejo, CA) on the Friday and Saturday before the event, as well as on race morning. On June 28, 2026, the Half Marathon starts at 7:30 AM, the 10K at 9:00 AM, the 5K at 9:30 AM, and the Kid’s 0.5K Race at 10:30 AM. The finish line closes at 11:30 AM. Participants are asked to arrive at the waterfront 20 minutes before their scheduled race start. Visit the organization's website for the most recent information.
