12 days in United States Itinerary

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.

Visit 16th Street Mall and The International Church of Cannabis for their historical value. Head to Denver Botanic Gardens and Garman Sculpture Worksfor some retail therapy. Get out of town with these interesting Denver side-trips: Estes Park (Spas & Estes Park Guided Tours) and Colorado Springs (National Museum of World War II Aviation, Old Colorado City Historic District, &more). There's still lots to do: explore the world behind art at Denver Art Museum, look for gifts at Mountain Lux Candles, take an in-depth tour of Museo De Las Americas, and contemplate the long history of Denver Union Station.

For reviews, where to stay, photos, and tourist information, refer to the Denver trip builder.

Mexico City, Mexico to Denver is an approximately 7-hour flight. You can also drive; or take a bus. Due to the time zone difference, you'll gain 1 hour traveling from Mexico City to Denver. Traveling from Mexico City in December, expect Denver to be colder, temps between 7°C and -8°C. Finish your sightseeing early on the 26th (Tue) to allow enough time to drive to Westminster.

Start off your visit on the 27th (Wed): identify plant and animal life at Butterfly Pavilion, have fun and explore at Arvada Center for the Arts & Humanities, then do a tasting at Silver Vines Winery, and finally stroll around Crown Hill Park.

For photos, reviews, more things to do, and tourist information, use the Westminster trip planning tool.

Westminster is just a stone's throw from Denver. December in Westminster sees daily highs of 7°C and lows of -5°C at night. Finish up your sightseeing early on the 27th (Wed) so you can go by car to Boulder.

Located in the foothills of the Rocky Mountains, Boulder is a busy college town known for its progressive values and natural resource conservation.

Kick off your visit on the 28th (Thu): learn the secrets of beer at a beer tour and tasting, brush up on your knowledge of spirits at Vapor Distillery, and then get a taste of the local shopping with Pearl Street Mall.

To see more things to do, other places to visit, reviews, and more tourist information, you can read our Boulder tour itinerary planner.

Boulder is just a short distance from Westminster. In December, plan for daily highs up to 7°C, and evening lows to -6°C. Finish your sightseeing early on the 28th (Thu) so you can drive to Longmont.

The City of Longmont is a Home Rule Municipality in Boulder and Weld counties of the U.S. state of Colorado. On the 29th (Fri), brush up on your knowledge of spirits at Spirit Hound Distillery, then sample the tasty concoctions at St. Vrain Cidery, and then sample the tasty concoctions at Left Hand Brewing Company.

For maps, more things to do, ratings, and more tourist information, you can read our Longmont itinerary maker tool.

Longmont is just a short distance from Boulder. Traveling from Boulder in December, you can expect nighttime temperatures to be slightly colder in Longmont, with lows of -9°C. Wrap up your sightseeing on the 29th (Fri) to allow time to drive to Rocky Mountain National Park.

Rocky Mountain National Park presents an ideal setting for recreation in the mountain range for which the park is named.

On the 30th (Sat), trek along Emerald Lake Trail, then stroll through Hidden Valley Sledding and Tubing Hill, then take a memorable drive along Trail Ridge Road, and finally explore the wealth of natural beauty at Many Parks Curve Overlook. Get ready for a full day of sightseeing on the 31st (Sun): trek along Hallett Peak.

To see traveler tips, reviews, where to stay, and tourist information, read our Rocky Mountain National Park trip itinerary planner.

Drive from Longmont to Rocky Mountain National Park in 1.5 hours. December in Rocky Mountain National Park sees daily highs of 9°C and lows of -9°C at night. Finish up your sightseeing early on the 31st (Sun) so you can catch the flight to Lafayette.

Lafayette is a city located along the Vermilion River in southwestern Louisiana. On the 1st (Mon), explore the different monuments and memorials at Cathedral of St John the Evangelist, then appreciate the extensive heritage of Acadian Village, then pause for some photo ops at Urns of Justice, and finally explore the activities along Lake Martin. Here are some ideas for day two: get engrossed in the history at Acadian Cultural Center and then appreciate the extensive heritage of Vermilionville.

To see where to stay, ratings, photos, and more tourist information, you can read our Lafayette trip planning website.

You can fly from Rocky Mountain National Park to Lafayette in 6 hours. Other options are to take a bus; or take a bus. The time zone changes from Mountain Standard Time (MST) to Central Standard Time (CST), which is usually a 1 hour difference. When traveling from Rocky Mountain National Park in December, plan for a bit warmer days and much warmer nights in Lafayette: temperatures range from 22°C by day to 10°C at night. Finish your sightseeing early on the 2nd (Tue) so you can travel back home.