A group of athletes has rowed a boat from San Francisco to Hawaii in record time.

The four-man crew was part of the Great Pacific Race, a rowing competition that pits two- and four-person teams against one another in identical boats on a solitary journey across the open ocean.

The teams live without any direct external support for the duration of the race.

Captain Jason Caldwell said he and his three teammates — Duncan Roy, Angus Collings and Jordan Shuttleworth — rowed in two-person, two-hour shifts for the entire trip — 24 hours a day.

“If you’re a team like us that wants to win a race, break the world record perhaps, you’ve got to keep that boat moving at all times,” Caldwell said. “We did that nonstop without a single break for these 30 days.”

Caldwell said the rowing was the easy part and the two-hour breaks in between were the hardest. That’s when the crew had to find ways to eat, sleep, stay healthy and clean.

“It’s just about maintaining your body,” he said. “You’re sleep-deprived, you’re malnourished, you’re dehydrated. You’ve got sores everywhere, stress-fractured ribs. Everyone’s got ailing injuries and they’re just getting worse and worse and worse. You’re basically trying to hold on. Your body is trying to hold on until you get to the finish line.”

Caldwell’s Latitude 35 racing team beat the previous race record by more than a week when it arrived in Waikiki on Wednesday.

The team completed the 2,400-nautical mile trip in 30 days, 7 hours and 30 minutes. The previous race record was 39 days, 9 hours and 56 minutes, set in 2016.

Caldwell holds other rowing records, including for crossing the Atlantic.

“The Pacific is very much different than the Atlantic. The Atlantic is very consistent,” Caldwell said. “But the Pacific is just not consistent at all. It’s much more brutal. Its highs are a lot higher. Its lows are a lot lower.”