The 150-mile Great Allegheny Passage (GAP) in Southwestern Pennsylvania and Western Maryland is a premier rail-trail destination.

About a 45-mile drive northwest of Boston, the Londonderry Rail Trail in the quaint southern New Hampshire town of Londonderry offers locals a slice of tranquility in an otherwise upside-down world with a 4.5-mile jaunt through verdant forests and wildlife-rich wetlands and along scenic ponds.

Floating sinuously over America’s longest waterway, the Bob Kerrey Pedestrian Bridge straddles the Missouri River between bustling Omaha—Nebraska’s largest city—and the quieter-feeling hometown of Council Bluffs, Iowa.

Today, the 13.58-mile Thermal Belt Rail Trail lies where the old Southern Railroad, and later the Thermal Belt Railway, once ran. The trail has been a boon for Rutherford County on a number of levels.

With a newly opened extension of the MCT Goshen Trail, travelers can now also access neighboring St. Clair County by trail for the first time. Providing even more transit options for locals, many of St. Clair County’s trails are being developed to intertwine with MetroLink, the region’s light rail system.

I had the pleasure of chatting with President Ryan Chao on how RTC is making this work happen in collaboration with thousands of partners and trail advocates across the country.

New England in autumn is nature’s spectator sport, and a special place to view its riotous colors is the Nashua River Rail Trail, spanning just over 12 miles in Massachusetts and spilling into New Hampshire.

The Grand Canyon Greenway Trail totals 13 miles of paved pathway for biking and walking, providing access to numerous scenic viewpoints and attractions in the park.

Here are four sections of the Great American that span 100 miles or more with minimal on-street connections—perfect for multiday adventuring.