1. San Francisco-Oakland-Fremont, Calif.
Transit coverage: 91.7 percent (5th highest)
Service frequency (minutes): 8.5 (12th highest)
Jobs reachable in 90 minutes: 34.8 (30th highest)
Walk score: 84.9 (2nd highest)
Commuters who bike: 1.65 percent (6th highest)
San Francisco is held in high regard for its many successful transit systems, including the San Francisco Municipal Transportation Authority and the Bay Area Rapid Transit district. These systems cover nearly 92 percent of neighborhoods — the fifth highest rate in the country. San Francisco also has the second highest walk score and is excellent for bicyclists. Commuter rails within the city allow bicyclists to mount with their bicycles, and there is a bike shuttle across the Bay Bridge to help cyclists during rush hour.