Best places for a long life

Residents of these 25 counties enjoy some of the highest life expectancies in the U.S.

We can't promise you'll live to 100 if you run Marin County's annual 7-mile Dipsea cross-county race. But it worked for Jack Kirk.

The race is open to competitors of all ages, and we mean all: Kirk ran every race from 1930 to 2002, finally retiring at age 96; he died a centenarian.

Marin County, at the north end of the Golden Gate Bridge across from San Francisco, is known for its liberal politics and its natural beauty: it features both Muir Woods and the Point Reyes seashore. And get yourself indoors, too: Marin is home to the Mill Valley Film Festival and, in San Anselmo, a top destination for antique shopping.

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