12 days in Colorado Itinerary

12 days in Colorado Itinerary

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Route & dates

12 days in Colorado Itinerary

Start: New York City
Fly:  4​h 30​min
1
Denver
— 2 nights
Drive:  1​h
2
Boulder
— 4 nights
Drive:  3​h 30​min
3
Aspen
— 5 nights
Fly:  9​h
End: New York City

2
nights
Denver

Denver ©
Aptly nicknamed the "Mile-High City," Denver sits at an altitude of 1,600 m (5,280 ft) above sea level, located right where the Great Plains give way to the Rocky Mountains.
You've added Denver Zoo, Larimer Square, Rocky Top Glide, and other attractions to your itinerary. Start off your visit on the 24th (Fri): see the sights in a new way with Rocky Top Glide, then admire nature's wide array of creatures at Denver Zoo, and then see a show at Red Rocks Park and Amphitheatre. On your second day here, make a trip to Larimer Square, then take a stroll through 16th Street Mall, and then engage your brain at Butterfly Pavilion and Insect Center.

To find other places to visit, photos, traveler tips, and other tourist information, read our Denver visit planner .

New York City to Denver is an approximately 7-hour flight. You can also do a combination of bus and flight; or drive. Traveling from New York City to Denver, you'll gain 2 hours due to the time zone difference. Traveling from New York City in August, plan for a bit cooler nights in Denver, with lows around 58°F. Finish up your sightseeing early on the 25th (Sat) so you can go by car to Boulder.

Things to do in Denver

Parks Nightlife Tours

Side Trips

Red Rocks Park and Amphitheatre, Butterfly Pavilion and Insect Center
Highlights from your plan
Butterfly Pavilion and Insect Center ©
16th Street Mall ©
16th Street Mall
Red Rocks Park and Amphitheatre ©
Red Rocks Park and Amphitheatre

4
nights
Boulder

Boulder ©
Located in the foothills of the Rocky Mountains, Boulder is a busy college town known for its progressive values and natural resource conservation.
Your day-by-day itinerary now includes Chautauqua Park as well as Lily Lake. You'll explore the less-touristy side of things at St Mary's Glacier and Eldorado Canyon State Park. Take a break from the city and head to Trail Ridge Road and Sprague Lake. Venture out of the city with trips to Rocky Mountain National Park (Many Parks Curve Overlook, Sheep Lakes, & more) and Chapel on the Rock (in Allenspark).

For maps, ratings, and tourist information, use the Boulder trip planner .

Traveling by car from Denver to Boulder takes an hour. Alternatively, you can take a bus. In August, daytime highs in Boulder are 85°F, while nighttime lows are 58°F. Wrap up your sightseeing by early afternoon on the 29th (Wed) to allow time for travel to Aspen.

Things to do in Boulder

Parks Nature Outdoors

Side Trips

Rocky Mountain National Park, Eldorado Canyon State Park, St Mary's Glacier
Highlights from your plan
Trail Ridge Road ©
Trail Ridge Road
St Mary's Glacier ©
St Mary's Glacier
Chapel on the Rock ©
Chapel on the Rock

5
nights
Aspen

Aspen ©
Known as a ski resort town, Aspen's history goes back to its roots as a silver-mining village tucked away in an isolated valley of the Rocky Mountains.
You'll explore the less-touristy side of things at Rio Grande Trail and Crater Lake Trail. Get in touch with nature at McCullough Gulch and Maroon Lake Scenic Trail. When in Aspen, make a side trip to see South Park City Museum in Fairplay, approximately 1h 40 min away. The adventure continues: take in the awesome beauty at Maroon Bells and identify plant and animal life at Maroon Bells-Snowmass Wilderness Area.

To see reviews, maps, other places to visit, and tourist information, use the Aspen holiday planner .

You can do a combination of bus and flight from Boulder to Aspen in 3.5 hours. Alternatively, you can drive; or do a combination of bus, flight, and shuttle. Plan for slightly colder temperatures traveling from Boulder in August, with highs in Aspen at 77°F and lows at 46°F. On the 3rd (Mon), you'll travel back home.

Things to do in Aspen

Parks Trails Outdoors

Side Trips

McCullough Gulch, South Park City Museum, Maroon Bells-Snowmass Wilderness Area
Highlights from your plan
Maroon Lake Scenic Trail ©
Maroon Lake Scenic Trail
South Park City Museum ©
South Park City Museum

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