27 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.

Get some historical perspective at Cathedral of the Immaculate Conception and Center for Colorado Women's History. Step out of the city life by going to Butterfly Pavilion and Rocky Mountain Arsenal National Wildlife Refuge. The adventure continues: examine the collection at Kirkland Museum of Fine & Decorative Art, admire the masterpieces at Clyfford Still Museum, do a tasting at Balistreri Vineyards, and get engrossed in the history at Golden History Museum & Park.

To find maps, ratings, more things to do, and more tourist information, refer to the Denver vacation planning website.

Frankfurt, Germany to Denver is an approximately 13-hour flight. You'll gain 8 hours traveling from Frankfurt to Denver due to the time zone difference. Plan for slightly colder nights when traveling from Frankfurt in May since evenings lows in Denver dip to 7°C. Finish your sightseeing early on the 2nd (Fri) so you can drive 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.

Get some cultural insight at Shelby American Collection and City of Louisville Historical Museum. Take a break from the city and head to Mesa Trail and Anne U. White trail. Next up on the itinerary: hike along Royal Arch, look for gifts at Boulder Book Store, deepen your understanding at Naropa University, and explore the striking landscape at Settler's Park.

To see more things to do, where to stay, reviews, and other tourist information, go to the Boulder trip planner.

Boulder is very close to Denver. June in Boulder sees daily highs of 33°C and lows of 15°C at night. Finish your sightseeing early on the 5th (Mon) to allow enough 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.

Start off your visit on the 6th (Tue): take your sightseeing to a higher altitude at Deer Mountain, then admire the verdant scenery at Many Parks Curve Overlook, and then hike along North Inlet Trail.

To see ratings, photos, reviews, and more tourist information, read our Rocky Mountain National Park online visit planner.

You can drive from Boulder to Rocky Mountain National Park in 1.5 hours. In June, daily temperatures in Rocky Mountain National Park can reach 36°C, while at night they dip to 14°C. Finish up your sightseeing early on the 6th (Tue) so you can go by car to Rapid City.

South Dakota's second-largest city, Rapid City has for many years served as a gateway to the West.

You'll explore the less-touristy side of things at Chapel in the Hills and Adams Museum. Your cultural itinerary includes sights like Prairie Edge Trading Co. & Galleries and Museum of Geology. You'll find plenty of places to visit near Rapid City: Deadwood (Deadwood Trailhead George S. Mickelson Trail, Days of '76 Museum, &more). Next up on the itinerary: get in on the family fun at Storybook Island, explore the fascinating underground world of Black Hills Caverns, and indulge your thirst for a good beer at Lost Cabin Beer Co..

To find traveler tips, where to stay, ratings, and tourist information, refer to the Rapid City trip itinerary planner.

Drive from Rocky Mountain National Park to Rapid City in 7 hours. Alternatively, you can do a combination of car and flight; or do a combination of taxi and bus. While traveling from Rocky Mountain National Park, expect little chillier days and about the same nights in Rapid City, ranging from highs of 30°C to lows of 16°C. Finish your sightseeing early on the 9th (Fri) to allow enough time to fly to Grand Teton National Park.

The peaks of Grand Teton National Park aren't the highest in the world, but they sit atop what might be nature's archetypes for mountains.

On the 10th (Sat), contemplate the waterfront views at Leigh Lake, then hike along Hermitage Point, then pause for some serene contemplation at Chapel of the Sacred Heart, and finally tour the pleasant surroundings at Menor's Ferry Historical Trail. Get ready for a full day of sightseeing on the next day: take in the dramatic natural features at Glacier View Turnout, then take in the awesome beauty at Teton Point Turnout, then identify plant and animal life at Blacktail Ponds Overlook, and finally explore the activities along Snake River.

To find photos, reviews, maps, and tourist information, read our Grand Teton National Park trip planner.

You can fly from Rapid City to Grand Teton National Park in 6 hours. Other options are to drive; or do a combination of bus and car. Expect slightly colder temperatures when traveling from Rapid City in June; daily highs in Grand Teton National Park reach 26°C and lows reach 4°C. Cap off your sightseeing on the 12th (Mon) early enough to go by car to Yellowstone National Park.

An exceptionally diverse landscape and varied wildlife have made Yellowstone National Park one of America's most popular parks.

Visiting Grand Loop Road and West Thumb Geyser Basin will get you outdoors. You'll explore the less-touristy side of things at Artists Paintpots and Green Dragon Spring. The adventure continues: witness a stunning natural landmark at Castle Geyser, explore the striking landscape at Aurum Geyser, appreciate the extensive heritage of S Rim Trail, and contemplate the geological forces at Monument Geyser Basin.

To find where to stay, other places to visit, more things to do, and more tourist information, you can read our Yellowstone National Park journey site.

Drive from Grand Teton National Park to Yellowstone National Park in 1.5 hours. Traveling from Grand Teton National Park in June, expect Yellowstone National Park to be slightly colder, temps between 22°C and 1°C. Wrap up your sightseeing on the 15th (Thu) to allow time to fly to Salt Lake City.

Utah's capital and most populous city, Salt Lake City boasts a small-town feel, big-city amenities, and plenty of nature on its doorstep.

Your inner history buff will appreciate Historic 25th Street and Assembly Hall. Step off the beaten path and head to Little Cottonwood Canyon and Lake Blanche Trail. Explore Salt Lake City's surroundings by going to Doughnut Falls (in North Salt Lake) and Ogden (Utah State Railroad Museum & Therapeutix Mind & Body). The adventure continues: explore the stunning scenery at City Creek Canyon and examine the collection at Pioneer Memorial Museum.

To see ratings, traveler tips, photos, and tourist information, use the Salt Lake City day trip planning tool.

Traveling by flight from Yellowstone National Park to Salt Lake City takes 3.5 hours. Alternatively, you can drive; or do a combination of taxi and bus. In June, Salt Lake City is much hotter than Yellowstone National Park - with highs of 37°C and lows of 19°C. Finish up your sightseeing early on the 18th (Sun) so you can catch the flight to Colorado Springs.

Stunning Garden of the Gods Park scenery, blue skies and the glory of Pikes Peak-America’s Mountain have attracted visitors to Colorado Springs for more than a century.

Do some cultural sightseeing at Rocky Mountain Food Tours and Michael Garman Museum & Gallery. Take a break from the city and head to Palmer Park and North Cheyenne Canon Park. The adventure continues: see the interesting displays at U.S. Olympic & Paralympic Museum, take in the awesome beauty at Cheyenne Mountain State Park, get outside with Colorado Wolf Adventures, and stroll around Fox Run Regional Park.

To see traveler tips, ratings, where to stay, and other tourist information, you can read our Colorado Springs visit planner.

You can fly from Salt Lake City to Colorado Springs in 3.5 hours. Other options are to drive; or take a bus. In June, Colorado Springs is a bit cooler than Salt Lake City - with highs of 34°C and lows of 14°C. Finish up your sightseeing early on the 21st (Wed) so you can go by car to Denver.

Start off your visit on the 22nd (Thu): get engrossed in the history at History Colorado Center, stop by Tattered Cover Book Store Colfax, and then grab your bike and head to Cherry Creek Trail. Here are some ideas for day two: steep yourself in history at Dinosaur Ridge, grab your bike and head to Mount Falcon Castle Trail, then take an in-depth tour of Morrison Natural History Museum, and finally walk around Crown Hill Park.

For maps, photos, reviews, and other tourist information, read our Denver trip planner.

Traveling by car from Colorado Springs to Denver takes 1.5 hours. Alternatively, you can take a bus; or do a combination of flight and train. Cap off your sightseeing on the 23rd (Fri) early enough to catch the flight back home.