Google has partnered with Rails-to-Trails (RTC), a nonprofit focused on creating a network of trails from former rail lines, to add biking directions to Google Maps.

Google Maps now has biking route details for more than 150 U.S. cities covering more than 12,000 miles of trails and bike lanes. Google says it plans to continue to add new trail information to Google Maps and is requesting feedback from riders via the "Report a Problem" tool.

The new feature allows Google Maps users to type in their destination and receive directions for the best bicycling route. Google says its algorithm is weighted to prefer routing on trails instead of roads open to automobile traffic as long as it won’t take cyclists too far out of the way.

"We’re thrilled to be working with Rails-to-Trails Conservancy to make RTC’s extensive bike trail data available through Google Maps and Google Earth," says Shannon Guymon, Product Manager for Google Maps.

"Bikers all over the country now will be able to explore new trails or find specific directions in their local community with just a few clicks of their mouse."