About This Route
Stretching 11-18 miles from Logan Pass to Granite Park Chalet or extending to Fifty Mountain, the Highline Trail is Glacier National Park's most famous backpacking path, hugging sheer cliffs above Going-to-the-Sun Road with views of Bearhat Mountain and Hidden Lake. This exposed traverse gains minimal elevation (about 1,000 feet net) but demands fitness for narrow ledges and windy conditions. Secure NPS permits for camps like Granite Park or Hole-in-the-Wall; all sites have mandatory bear hangs. Ideal for 2-4 day trips, it showcases bighorn sheep and wild goats while adhering to Leave No Trace by minimizing impact on fragile alpine tundra.
Safety Considerations
Exposed sections like the 'Garden Wall' ledge present fall risks; stay centered on the trail, especially with heavy packs, as gusts exceed 50 mph. NPS warns of hypothermia from sudden storms dumping rain on sweat-soaked hikers; avoid cotton jeans and layer with quick-dry merino wool. Glacial melt streams near Hidden Lake Overlook are icy and swift; use trekking poles for stability and never cross alone. Mountain goats aggressive near young; maintain 25-yard distance per NPS guidelines to prevent attacks. Afternoon lightning is common at Logan Pass; descend below treeline by 1 PM. Watch for icy patches year-round on shaded cliffs.
Essential Gear
Windproof layers (Arc'teryx Gamma LT jacket), sun hat, high-SPF lip balm for intense UV at 6,600 feet. REI Flash 55 pack for day-to-multi extensions. Bear canister unnecessary with hang bars, but pack UDAP bear spray. Gaia GPS app with offline maps complements NPS topo. Microspikes for ice, emergency bivy sack, and multi-tool. Water: LifeStraw Peak Solo for high-alpine sources.
Emergency Tips
Limited signal; SPOT satellite messenger for rescue. Contact Logan Pass Visitor Center (406-888-7800) or St. Mary Ranger Station. Falls: Stabilize, signal via whistle/mirror. Hypothermia: Granite Park Chalet as shelter, warm fluids, huddle. Goat charge: Drop pack, back away slowly.