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National parks: Glacier National Park vs. Rocky Mountain National Park

Quick Verdict

Both Glacier National Park and Rocky Mountain National Park offer incredible natural beauty and recreational opportunities. Glacier is larger and offers in-park lodging, while Rocky Mountain is closer to a major airport and has more developed trails. The best choice depends on your priorities: remoteness and size versus accessibility and developed infrastructure.

Key features – Side-by-Side

AttributeGlacier National ParkRocky Mountain National Park
NameGlacier National ParkRocky Mountain National Park
Average Annual VisitationAround 3 million visitors each year. In 2024, the park had 3,211,813 visitors.Over 3 million visitors each year (some sources cite over 4 million)
Park Size (acres)More than 1 million acres265,461 acres (414.78 sq mi)
Number of Hiking Trails158 trails, totaling 745.9 milesOver 300 miles of hiking trails (some sources say 355 miles)
Availability of Guided ToursYes, including boat tours, bus tours (Red Bus Tours), guided hiking trips, horseback riding, and rafting. Some tours highlight Blackfeet culture.Yes, available through various companies and the park service. Options include private tours, wildlife tours, photo tours, and hiking tours. Some ranger-led programs are also available.
Camping Options (developed vs. backcountry)8 Class A campgrounds with 943 sites, 5 Class B campgrounds with 61 sites, and 65 backcountry campgrounds with 208 sites.Developed: Five campgrounds accessible by vehicle (reservations often required). Backcountry: Available, but requires a permit.
Wildlife Viewing OpportunitiesGrizzly bears, mountain goats, bighorn sheep, elk, moose, and various bird species. Best time is late spring through early fall (May to September), with early mornings and evenings being prime times.Excellent. Common sightings include elk, mule deer, bighorn sheep, marmots, pikas, and various bird species. Moose sightings are less common but increasing.
Accessibility for Visitors with DisabilitiesAll park shuttles are ADA accessible. Accessible trails include Trail of the Cedars and McDonald Falls.Some trails are accessible, such as Bear Lake Loop and Coyote Valley Trail. The park also offers an all-terrain wheelchair.
Peak Season CrowdsLate June through early September, with July and August being the busiest months.Summer (June-August) is the busiest time. July is often the most crowded month. Fall weekends (September-October) are also very busy.
Entrance FeeA 7-day pass for a private vehicle is $35 during the summer and $25 during the winter (November 1 to April 30). An annual pass for Glacier National Park is $50.1-day pass: $30/automobile; 7-day pass: $35/automobile; Annual Pass: $70. Other passes are available, including those for seniors, military personnel, and people with disabilities.
Availability of Lodging Inside the ParkAvailable inside the park, but all in-park lodging is shut down during the winter.No lodging available inside the park. Lodging is available in the nearby towns of Estes Park and Grand Lake.
Proximity to Major AirportsThe nearest city to Glacier National Park is Columbia Falls, Montana.Approximately 55 miles (89 km) northwest of Denver. It's about a 1.5-hour drive from Denver.
Cell Phone Service AvailabilityLimited and unreliable, especially in remote areas.Cell phone service availability can be limited in certain areas of the park.

Overall Comparison

Glacier National Park: >1 million acres, 745.9 miles of trails, $35 (7-day pass). Rocky Mountain National Park: 265,461 acres, >300 miles of trails, $35 (7-day pass).

Pros and Cons

Glacier National Park

Pros:
  • Diverse wildlife viewing opportunities
  • Variety of guided tours available
  • Multiple camping options
  • ADA accessible facilities and services
  • Well-maintained facilities
  • Easy navigation with maps and signage
  • Helpful and invested park staff
Cons:
  • Limited cell phone service
  • Crowded trails and parking lots during peak season
  • Potential entrance delays during peak season
  • Limited services and potential for extreme weather in winter

Rocky Mountain National Park

Pros:
  • Excellent wildlife viewing opportunities
  • Over 300 miles of hiking trails
  • Guided tours available
  • Some trails are accessible for visitors with disabilities
  • Clean and well-maintained facilities
  • Helpful and friendly park staff
  • Ranger-led programs available
  • Maps and signage to help with navigation
Cons:
  • Crowded conditions during peak season (summer and early fall)
  • Limited cell phone service in certain areas
  • No lodging available inside the park
  • Backcountry camping requires a permit
  • Longs Peak Trail (Keyhole Route) is a challenging climb
  • Trail Ridge Road typically closes in mid-October

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