The Loop
Last Updated: July 2026
Road Feature - Switchback
Overview
About This Attraction
The hairpin switchback frames your first encounter with the narrow, mountainside-carved section of Going-to-the-Sun Road—the dramatic transition from broad valley floor to cliff-clinging highway. This marks where road builders faced the steepest challenge: 600 vertical feet of ascent required rapid switchback through the glacier-carved valley wall. The Loop Trail begins here, climbing 4.2 miles and 2,600 feet to Granite Park Chalet, opening access to high alpine meadows. Visible rock layers in the road cut expose Precambrian Belt Supergroup strata tilted by ancient uplift.
Quick Facts
Type
Road Feature - Switchback
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ℹ️ Data Sources
National Park Service — The Loop (official page) (checked 2026-07-20) National Park Service — Glacier National Park fees, hours & conditions (checked 2026-07-05) Climate data: West Glacier, MT, 3,200 ft (NOAA 1991-2020 normals, station USC00248809) YourNPGuide Editorial
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