Sarah Outen is rowing across the Pacific Ocean. Alone.

The adventurer is paddling her way across the world's largest ocean as part of a 20,000-mile (32,000 kilometers) journey called London2London, in which she is attempting to circle the Northern Hemisphere to raise money for charity and break some records while she's at it.

Outen began her 2.5-year odyssey on April 1, 2011, when she kayaked down the River Thames and across the English Channel to France. From there, she biked across Europe and Asia, then set off rowing across the Pacific on May 13, 2012. But then a tropical storm forced her to put her trip on pause. She came back this spring with a sturdier ship, setting off on April 27. She is slated to reach Vancouver, British Columbia, Canada, in October. By then, she will have crossed more than 4,000 miles (6,400 km) of ocean. Read more about Outen's trek at GrindTV.

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