When is Mare Island Half Marathon?

Mare Island Half Marathon takes place on Jun 28, 2026. That's in 1 month.

Where is Mare Island Half Marathon located?

Mare Island Half Marathon is held in Vallejo, California, United States.

What distances are available at Mare Island Half Marathon?

Mare Island Half Marathon offers the following distances: 13.1M, 10K, 5K.

What is the typical weather for Mare Island Half Marathon?

Based on historical data, you can expect temperatures between 54°F and 81°F on race day. There's approximately a 0% chance of precipitation.

Mare Island Half Marathon (5K-13.1M) - Jun 28, 2026 | Vallejo, CA

Embark on a unique running journey at the Mare Island Half Marathon, 10K, and 5K on June 28, 2026, in scenic Vallejo, CA. This event, starting and finishing at the Mare Island Brewing Co. Coal Sheds, offers more than just a race; it's an immersive experience through over a century of naval history and natural beauty. Runners can expect typical race day conditions to be pleasant, with highs around 81°F and lows around 54°F, and a 0% chance of precipitation, though morning fog is a possibility given its waterfront location.

The Half Marathon course truly stands out, exploring the historic naval yard on the east side before climbing to the highest point of Mare Island, rewarding runners with stunning panoramic views of the San Pablo Bay, Mt. Diablo, and Mt. Tamalpais. Participants will also traverse past the historic Old Admiral housing, including a glimpse of St. Peter's Chapel with its renowned Tiffany stained glass, and along the picturesque San Pablo Bay Trail. The terrain is a diverse mix of paved roads and unpaved, compacted dirt trails. For those opting for shorter distances, the 10K and 5K routes predominantly stick to paved roads, winding through the historic waterfront and past the Admiral mansions, with the 10K also featuring a climb to the Mare Island Preserve and a stretch on the San Pablo Bay Trail.

What truly sets the Mare Island Half Marathon apart is its captivating blend of historical landmarks, waterfront vistas, and a vibrant post-race celebration at the Mare Island Brewing Co. Coal Sheds. Every pre-registered participant receives a race t-shirt and a finisher's medal, creating lasting mementos of this memorable run. Whether you're seeking a challenging half marathon, a scenic 10K, or a casual 5K (great for strollers!), this race promises an engaging atmosphere and a deep dive into the rich heritage of Mare Island.