Open water swimmer Catherine Breed has completed Swim California, an approximately 900-mile swimming expedition from the Oregon border to Mexico. Her finish concluded nearly four months of swimming through the Pacific’s cold water, strong currents, heavy seas, and shifting weather, alongside a mission to connect people with the ocean and the work needed to protect it.
Breed, a 33-year-old Pleasanton native, began the expedition on July 1. She completed the route in stages, supported by a boat and crew, with GPS waypoints linking successive swims and observers documenting her progress. The expedition is believed to be the first completed staged swim of California’s full coastline, with formal ratification subject to review of its supporting records.
She completed the final 2 1/2 miles of her swim on Monday morning. A ceremonial finish took place in Coronado around 3 p.m.
“For months, I measured my world in the next few miles,” Breed said. “This was harder than I expected, and there were days when I was exhausted and overwhelmed. My team saw those moments and met me with so much patience, encouragement, and care. Every message from someone following along, every person who came out to cheer, helped me get back in the water. I’m still taking in what we’ve done, but mostly I keep thinking about how grateful I am. So many people helped me keep going.”
Catherine Breed, 33 from Marin County, reaches the beach at Coronado on Monday, Oct. 19, 2026, in Coronado, CA. Breed began her swim from Brookings, Oregon, to the Mexico border, taking 111 days from the start until Monday, October 19th, and completing nearly 900 miles. (Nelvin C. Cepeda / The San Diego Union-Tribune)
Breed stepped away from a career in medical technology sales to undertake the expedition. Her journey carried her past the remote North Coast, past the Golden Gate Bridge, across Monterey Bay, along Big Sur and around Point Conception before continuing through Southern California to the Mexican border.
Progress depended on much more than physical fitness. Weather determined when the team could move. Long stretches of exposed coastline offered few places to shelter. Boat transits, interrupted sleep, nutrition, and recovery added to the demands of returning to the water day after day. Before entering Big Sur, the crew waited in Monterey Bay for a suitable weather window, then advanced through the remote stretch, averaging more than 10 miles of swimming a day.
The expedition also offered encounters few people experience. In her dispatches from the water, Breed described a humpback mother and calf passing beneath her, swimming among dolphins, and watching marine life gather along the coast. She also documented floating litter and the daily decisions required to travel safely through an unpredictable environment.
“I have spent my life loving this coast. Swimming it gave me hundreds of new reasons to protect it,” Breed said. “I saw whales beneath me, plastic beside me, and communities giving their time to look after these places. I hope people who followed this journey choose one place they love and find a way to take care of it.”
Catherine Breed, 33 from Marin County, reaches the beach at Coronado on Monday, Oct. 19, 2026, in Coronado, CA. Breed began her swim from Brookings, Oregon, to the Mexico border, taking 111 days from the start until Monday, October 19th, and completing nearly 900 miles. (Nelvin C. Cepeda / The San Diego Union-Tribune)
Through her nonprofit, Sea Dreamers, Breed connected the expedition with community gatherings and conversations about kelp forests, marine wildlife, water quality and public access to the coast. Along the route, residents welcomed the team into harbors, young swimmers asked questions, and ocean advocates shared the challenges facing their communities.
The women serving aboard the expedition also became central to its story. Experienced captains and crew members managed navigation, safety and the changing demands of life at sea. Breed wrote about the confidence she drew from their preparation, clear communication and ability to find joy during an exhausting undertaking.
“I hope a girl watching this sees a future she hadn’t considered for herself,” Breed said. “I was surrounded by women who could navigate a boat, make a tough call and find something to laugh about afterward. I want more girls to have that kind of confidence in themselves and in each other.”
Rinehart writes for the Santa Cruz Sentinel.