At least according to Wikipedia, citing the book Sarah: How a Hockey Mom Turned Alaska’s Political Establishment Upside Down:
Her husband, Todd, is a Native Yup’ik Eskimo. Outside the fishing season, Todd works for at an oil field on the North Slope and is a champion snowmobiler, winning the 2000-mile “Iron Dog” race four times. The two eloped shortly after Palin graduated college; when they learned they needed witnesses for the civil ceremony, they recruited two residents from the old-age home down the street. The Palin family lives in Wasilla, about 40 miles (64 km) north of Anchorage.