Four Motherlode Masters swimmers braved the cold waters of San Francisco Bay Sunday to participate in the 21st annual Alcatraz Shark Fest, a 1.5-mile open water swim from the infamous island prison to shore.

“Every swimmer dreams of making the ultimate ‘escape’ from (Alcatraz),” an event press release said. “This is the swim the Anglin Brothers and Frank Lee Morris successfully attempted in their escape from Alcatraz on the night of June 12, 1962.”

The sold-out event featured 700 swimmers in wet suits, and about 100 more crazies who went wet suit free. The top finisher completed the course in 27 minutes, 10 seconds, with the average time among all competitors at 45:54.

Peter Oliver had the fastest time of the Motherlode Masters quartet and the 44th best time overall, completing the swim in 31:41.9 seconds.

Oliver improved his time from last year at this same event and placed third in the men’s 50-54 year-old division.

Colleen Brophy placed fifth in the women’s 45-49 division, completing the swim in 37:07.9, which was also an improvement from her time a year ago.

Mike Brown was fourth in the men’s 65-69 division and bettered his previous time as well, finishing the swim in 41:05.5.

Participating in the event for the first time, Christine Oliver successfully conquered her fear of the cold water and ‘escaped’ from Alcatraz in 41:39.4.

She placed 12th in the women’s

45-49 division, but more importantly, was able to cross her accomplishment off on her bucket list.

For more information on Shark Fest, visit sharkfestswim.com.

For more information on the Motherlode Masters swim group, visit motherlodeswimming.com.