By Jeanine Barone, Special to The Denver Post Is your first instinct to jump on a train when you need to travel long distance? Hardly. But, by the turn of the 19th century, most every American traveler went by train. While the railroad’s heyday is long gone, its derelict corridors are being resurrected as rails-trails — multi-use paths where you’ll be able to check out historical features, nearby museums and restaurants, or become enwrapped in natural landscapes.