Open-water swimmer Catherine Breed has completed her 900-mile journey along California’s coastline, finishing a nearly four-month challenge that brought her through Monterey Bay and Santa Cruz County.
Breed, 33, began her Swim California expedition July 1 at the Oregon border. She reached the Mexican border in Southern California on Oct. 19 after battling cold water, strong currents and changing weather conditions.
Catherine Breed speaks at the Santa Cruz Wharf in the midst of her historic 900-mile swim along the West Coast on Aug. 22, 2026.
It is believed to be the first completed swim of California’s entire coastline, although the journey was completed in stages rather than as one continuous swim. Formal recognition of the achievement is pending a review of GPS records and other documentation.
“For months, I measured my world in the next few miles,” Breed said in a statement announcing the completion. “This was harder than I expected, and there were days when I was exhausted and overwhelmed.”
Breed credited her support team and the many people who followed her journey with helping her reach the finish.
“Every message from someone following along, every person who came out to cheer, helped me get back in the water,” she said. “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.”
Breed’s journey included a stop in Santa Cruz on Aug. 22, when she spoke to about 250 people at the Santa Cruz Wharf. At the time, she had completed about 420 miles of the swim.
“I love Santa Cruz so much! I’ve spent lots of time surfing here,” Breed told the crowd during the appearance.
Breed said she had bigger concerns than the sea life or dangerous currents she might encounter.
“My biggest fear isn’t the sharks, whales, treacherous currents and stinging jellyfish, it’s disappointing my team and my supporters,” she said.
And she recalled watching a whale swim beneath her on her way to Santa Cruz.
“It looked like a big white freight train,” she said.
Santa Cruz Mayor Fred Keeley praised Breed’s efforts.
“This woman’s vision and dedication are uniquely inspiring,” Keeley said.
While in Santa Cruz, Breed said tough tests were just ahead of her.
“One of our biggest challenges will be the Big Sur coast because there’s really no place to stop there,” Breed said during her Santa Cruz appearance.
That challenge proved significant. Before entering Big Sur, Breed and her crew waited in Monterey Bay for favorable weather. Once conditions improved, she averaged more than 10 miles of swimming each day.
Weather often determined how far Breed could swim and when the crew could move. Long sections of the coastline offered few safe harbors, making boat travel, sleep, meals and recovery an important part of the expedition.
Breed said she hopes people who followed her journey will become more involved in protecting their favorite coastal areas. Her expedition also supported Sea Dreamers, the nonprofit organization she founded to connect women with the ocean through adventure, education and community involvement.
Breed is a former University of California, Berkeley swimmer and two-time Pan American Games gold medalist. She previously set open-water swimming records in Monterey Bay and Lake Tahoe and on a route between the Farallon Islands and the Golden Gate Bridge.
She stepped away from a career in medical technology sales to take on the California coastline.
Although the expedition has ended, Breed said its greater purpose was to encourage people to build a stronger connection with the ocean and help protect it.
“I have spent my life loving this coast. Swimming it gave me hundreds of new reasons to protect it,” Breed said after completing the journey. “I saw whales beneath me, plastic beside me, and communities giving their time to look after these places.”
Those encounters helped strengthen her commitment to protecting the ocean, she said.
“I hope people who followed this journey choose one place they love and find a way to take care of it,” she said.