Golden Gate, San Francisco
Ride across the Golden Gate Bridge to Sausalito and Tiburon and return by ferry. With great views, you also get to see the landmark bridge up close. Most of the route is away from traffic. Take the National Park Bike Path from Fisherman's Wharf to the bridge, ride across on the sidewalk and then continue downhill to Sausalito or even further to Tiburon. You can get a ferry back from both destinations. 13km to Sausalito, suits beginners and intermediates. Bike tours, hire: baycitybike.com.
Farmington Canal Heritage Trail, New Haven, Connecticut
This is an all-inclusive paved trail fit for any bike or any age, just over 130km of motor vehicle-free paved cycling. The trail makes its way through Thomas Jefferson country and includes great scenery and plenty of towns along the way for food and water stops.
East Bay Bike Path, Bristol, Rhode Island