Colorado's National Parks
Alpine tundra, North America's tallest dunes, a sheer black canyon and ancient cliff dwellings.
Best time to visit · Colorado
Best Time to Visit Rocky Mountain National Park
Alpine tundra, elk herds and the highest continuous paved road in America.
The best time to visit Rocky Mountain National Park is July–September. It's busiest in June through September.
Month by month
Best monthsJul–Sep
Best valueJul–Sep
BusiestJun–Sep
Established1915
Rocky Mountain by season
Winter Fair
Snowshoeing and backcountry skiing at Bear Lake. Trail Ridge Road is closed, but elk and moose are easy to spot.
Spring Fair
Trail Ridge Road usually opens around Memorial Day. Lower trails clear, but high trails stay snowy until June.
Summer Prime
Prime season for the tundra and alpine wildflowers. Afternoon lightning storms are common, so summit early.
Fall Good
Aspens peak in late September and the elk rut draws crowds to the meadows at dusk.
What to do
- Drive Trail Ridge Road over the Continental Divide
- Hike to Emerald Lake from Bear Lake
- Watch the elk rut in Moraine Park (Sept–Oct)
- Hike Sky Pond
- Find moose on the quieter west side
Local tip
Start alpine hikes at dawn. Afternoon thunderstorms above the treeline are dangerous almost every summer day.
Good to know
Trail Ridge Road climbs to 12,183 feet, making it the highest continuous paved road in the United States.
Before you go: The park has required timed-entry permits from late May to October in recent years. Check current conditions on nps.gov.
Getting there
Closest major airport: Denver (DEN), about 1.5–2 hours.
Nearby national parks
Approximate driving distance. Check a map for exact routes.
Where to stay
Rocky Mountain month-by-month ratings
| Month | Rating | Crowds | Notes |
|---|---|---|---|
| January | Fair | Moderate | |
| February | Fair | Moderate | |
| March | Fair | Moderate | |
| April | Fair | Moderate | |
| May | Fair | Busy | |
| June | Good | Peak crowds | |
| July | Prime | Peak crowds | Prime season starts · Best value |
| August | Prime | Peak crowds | Best value |
| September | Prime | Peak crowds | Last prime month · Best value |
| October | Good | Busy | |
| November | Fair | Moderate | |
| December | Fair | Moderate |
Road trips with Rocky Mountain
Questions about visiting Rocky Mountain
When is the best time to visit Rocky Mountain National Park?
The best time to visit Rocky Mountain National Park is July–September. It's busiest in June through September.
What is the worst time to visit Rocky Mountain National Park?
November through May are the weakest time, when snow closes roads, trails or services.
When is Rocky Mountain National Park most crowded?
Crowds peak in June through September. July through September offer the best balance of good conditions and fewer people.
Is Rocky Mountain National Park worth visiting in winter?
Snowshoeing and backcountry skiing at Bear Lake. Trail Ridge Road is closed, but elk and moose are easy to spot.
Do you need a reservation for Rocky Mountain National Park?
The park has required timed-entry permits from late May to October in recent years. Always check the official NPS page for the current year's rules.
What is the closest airport to Rocky Mountain National Park?
The most convenient airport is Denver (DEN), about 1.5–2 hours.
How many days do you need at Rocky Mountain National Park?
Most road trips spend 2 to 3 days here.
More in Rocky Mountains & Plains · National parks in Colorado · Season calendar
Last reviewed October 4, 2026. Ratings are editorial. Rules and road openings change each year, so confirm on the official NPS site before you go.