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#9 on this list
White Sands National Park
New Mexico
Gypsum dunes glow at sunset; cool enough to hike all day.
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#10 on this list
Rocky Mountain National Park
Colorado
Deep winter quiet; snowshoeing from Bear Lake.
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Specs side by side
| Spec | White Sands National Park | Rocky Mountain National Park |
|---|---|---|
| Managing Agency | National Park Service | — |
| December Highs | Mid-50s to low 60s°F | Mid-20s to low-30s °F in eastern valleys |
| December Lows | Mid-20s to low 30s°F | — |
| Base Elevation | 4,000 feet above sea level | — |
| Entrance Fee | $25 per vehicle (or Interagency Pass) | — |
| Primary Access | U.S. Route 70 near Alamogordo | — |
| Elevation Range | — | 7,860 to 14,259 feet |
| Primary Winter Access | — | Beaver Meadows Entrance via Estes Park |
| Winter Road Closures | — | Trail Ridge Road closed at Many Parks Curve |
| Timed Entry System | — | Not required during winter months |
| Primary Winter Hub | — | Bear Lake Trailhead |
What our reviewers liked and didn't
White Sands National Park
- Mild daytime temperatures eliminate summer heat hazards
- Firm winter sand crust makes long-distance hiking far easier
- Spectacular low-angle sunlight and vibrant winter sunsets
- Significantly lower park traffic compared to spring break peaks
- Temperatures plummet below freezing immediately after sunset
- Unannounced missile range tests can trigger temporary closures
- Disorienting landscape presents serious navigation risks
Rocky Mountain National Park
- No timed-entry reservation permits required in December
- Plowed vehicle access directly to premier subalpine trailheads
- Pristine frozen alpine lake views without summer crowds
- Reliable elk viewing throughout lower-elevation meadows
- Severe alpine winds and dangerous wind chill levels
- Trail Ridge Road closure eliminates cross-park scenic driving
- Avalanche risks limit access beyond subalpine lake basins
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