High Bridge Trail State Park in Virginia; over 30 miles long; a shared-use trail. Is 2,400 feet long and ranges from 60 to 125 feet high. Was originally made of wood and was used for trains. After the last train crossing in 2004, the abandoned tracks were donated (in 2006) to the state park system, and restored between 2008 and 2012.
Along the edges of Lake Champlain (Vermont) is a scenic 12-mile (19,3km) trail that extends from downtown Burlington north through Colchester onto the Causeway. It's a multi-use trail so you will see walkers, runners, inline skaters and bikers. - via http://colchestervt.gov/Recreation/Causeway.html
Here is a list of cycling ideas for the US, with recommended bike routes for each of the 50 states that will provide you with a scenic bike ride. There are just so many places to choose from that would make a memorable cycling vacation and cycling destination!
America's national parks offer a variety of activities for its visitors—and many of the parks are ideal for bike lovers. Here are 10 national parks you should check out on two wheels. 10 Great National Parks for Cyclists http://www.active.com/cycling/articles/10-great-national-parks-for-cyclists?cmp=17N-PB33-S14-T1-D3--1100