The Katy Trail is a 237 mile (386 km) trail stretching across most of the state of Missouri. (Use this link if you're looking for the Dallas Katy Trail ). Over half of it follows Lewis and Clark's path up the Missouri River, where you can ride beneath towering river bluffs while eagles circle overhead. After leaving the river, the trail meanders through peaceful farmland and small-town Americana. America's longest "rails-to-trail" project, formerly the MKT rail line, is flat and scenic. It's ideal for hiking, running, or cycling on just about any kind of bike. Horseback riding is also allowed on a 35 mile section of the trail, from Sedalia to Clinton. Also, the Katy Trail's Tebbetts-Portland section now allows equestrian use. Many cross-country cyclists include the Katy Trail in their tours. It is part of Adventure Cycling's Lewis & Clark route , as well as the American Discovery Trail . Ru...