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#3 on this list
Glacier National Park
Montana
Huckleberries ripen; high trails clear of snow.
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- How we assessed it
- Specification researched
#4 on this list
Olympic National Park
Washington
Driest month — coast, rainforest, and ridges all accessible.
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Specs side by side
| Spec | Glacier National Park | Olympic National Park |
|---|---|---|
| Location | Northwestern Montana | — |
| Total Acreage | 1,013,322 acres | 922,650 acres |
| Elevation Range | 3,153 to 10,466 feet | — |
| Peak Season | July through September | — |
| Grizzly Density | High; EPA-approved bear spray required | — |
| Access Requirements | Timed vehicle reservations and wilderness permits | — |
| Highest Elevation | — | Mount Olympus (7,980 ft) |
| Gateway Towns | — | Port Angeles, Forks, Quinault |
| Prime Window | — | Late July through early September |
| Wilderness Permits | — | Required year-round via Recreation.gov |
| Bear Canisters | — | Mandatory in specified coastal and alpine zones |
What our reviewers liked and didn't
Glacier National Park
- Late-summer melt opens high-elevation passes and rugged traverses
- Unmatched glacial scenery with hanging valleys and turquoise tarns
- Exceptional big-game viewing including grizzlies, goats, and moose
- Extensive network of well-maintained alpine backcountry trails
- Intense crowds and strict vehicle reservation requirements
- Wildfire smoke can abruptly degrade air quality and visibility
- Fiercely competitive backcountry camping permit lottery
Olympic National Park
- August offers the most reliable window of dry weather and snow-free passes
- Extreme ecosystem variety spans glaciated peaks, rainforests, and rugged coast
- Premier wilderness backpacking on unroaded coastal beaches and high ridges
- Abundant opportunities to view native Roosevelt elk and Olympic marmots
- Severe traffic delays at popular trailheads like Hoh Rainforest and Sol Duc
- Strict backcountry permit quotas that book out months in advance
- Coastal routes present real dangers of tidal entrapment without precise planning
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