The Royal Canadian Pacific is a luxury overnight passenger train based in Calgary. The train makes charter runs along Canadian Pacific Railway (CPR) tracks in summer and fall, taking passengers into the Rocky Mountains of Alberta and British Columbia. A typical six-day, five-night round trip runs through the Columbia River valley and Crowsnest Pass. The train halts at night to enable passengers to enjoy all the scenery. It consists of up to ten CPR luxury passenger cars (built between 1916 and 1931), two fully restored 1950s locomotives and a booster unit. The CPR also owns a modern diesel GP38-2 locomotive, numbered 3084, for backup use.