Top 5 Most Environmentally Friendly Cities in America

2. San Francisco, CA

Overall Score: 1.92

San Francisco, commercial, financial, and cultural center of Northern California, is the 17th most populous city in the country as of 2022. It topped our rankings of the most bike friendly cities in the US. With over 450 miles of bikeways, nearly 130,000 people ride bikes every day in the city.