The Whistler Sea to Sky Climb, previously known as the Whistler Mountaineer, was a sight-seeing railway service. It was operated by Rocky Mountaineer Vacations (RMV) tour company, based in Vancouver, British Columbia, Canada who operate vintage trains over numerous sightseeing routes in Western Canada. It was established in 2006 and discontinued in 2015 after the retirement of Rocky Mountaineer's RedLeaf service fleet.