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4. Seattle, WA

Population: 2.5 million
% commute by walking: 3.2%
% commute by mass transit: 7.9%
Average commute: 30.1 minutes
Number of parks: 23

Seattle is a very dense city, which makes it very walkable. It’s bordered by the Puget Sound on one side and Lake Washington on two other sides. “People really care about the outdoors here,” Sperling noted. “It’s the home of REI. There are a lot of hiking trails.” The Seattle metro area has 298 miles of rails-to-trails, the highest on the list.

“It’s a real culture to get out and enjoy oneself,” Sperling said.

Rubberball | Tyler Marshal