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out and backStrenuous
Mount Antero via West Slopes is an out and back route covering 14.5 miles with 4,975 feet of elevation gain.
It rates as strenuous given its substantial elevation gain. Plan on 8–11.25 hr of moving time.
Route geometry source: Openstreetmap · © OpenStreetMap contributors · Open Data Commons Open Database License (ODbL) 1.0 · View a source way · Retrieved Jul 28, 2026