Arcata's Bivalves and Brews 5K mixes oysters, beer and marsh running

Arcata’s second annual Bivalves and Brews 5K turned the marsh into something closer to a moving festival than a standard road race. With optional beer-and-oyster stops at each mile marker, the run gave participants a playful way to move through the Arcata Marsh while tying directly into the city’s Oyster Fest weekend.

The race was presented by the Arcata Chamber of Commerce and organized with help from the Raccoon Run Club, a partnership that put local business promotion and volunteer energy at the center of the event. Registration ran from 8:45 a.m. to 9:45 a.m., with a 10:00 a.m. start at the Arcata Marsh in the I Street parking lot. The setup was simple, but the concept was unusual enough to stand out in Humboldt County, where outdoor recreation often blends with a strong appetite for local food, beer and community events.

That blend is exactly what gave the 5K its appeal. Participants treated it less like an elite competition and more like an open invitation to join in, whether they were serious runners or people trying something new. The oyster-and-beer pairing changed the feel of the course, making the run memorable for people who might not normally think of beer or oysters as part of a workout. By the finish line, the mood was more communal than competitive, with runners thanking organizers for building something different from a typical road race.

The event also worked as a lead-in to the larger Arcata Bay Oyster Festival, which marked its 36th year in 2026. Held on the second Saturday of June at Arcata Plaza, the festival is known for free admission, live music, local food and drink vendors, and contests including Shuck & Swallow and Oyster Calling. The 5K extended that same energy beyond the plaza and into the marsh, giving downtown Arcata another way to pull people in before the main festival crowd arrived.

For Arcata, that makes the race more than a novelty. It connects the marsh, the plaza, local organizers and the businesses that benefit from festival traffic into one branded community experience. The second-year race showed how a quirky local event can become part of the county’s summer identity, not just by entertaining runners, but by helping turn Oyster Fest into a longer, more participatory economic draw.