Located in the Sierra Madre Occidental in northwestern Mexico and spanning 37, 000 miles (59, 545 km), these canyons are longer and deeper than the Grand Canyon in Arizona. The surrounding national park may be explored by foot, bike, car, or on the Ferrocarril Chihuahua al Pacífico or ChePe, a train that runs between Chihuahua and Los Mochis along the main Canyon Urique.