15 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.

On the 12th (Fri), contemplate the waterfront views at Crown Hill Park.

To find ratings, other places to visit, traveler tips, and other tourist information, go to the Denver tour builder website.

Boston to Denver is an approximately 6.5-hour flight. You can also drive; or take a train. The time zone difference moving from Eastern Standard Time (EST) to Mountain Standard Time (MST) is minus 2 hours. Traveling from Boston in May, Denver is little chillier at night with lows of 43°F. Finish up your sightseeing early on the 13th (Sat) so you can catch the flight to Grand Junction.

The city of Grand Junction is the home rule municipality that is the county seat and the most populous municipality of Mesa County, Colorado, United States. On the 13th (Sat), do a tasting at Talon Wines at the Meadery and then take a stroll through Downtown Grand Junction.

To find ratings, more things to do, reviews, and other tourist information, read Grand Junction online travel route planner.

You can fly from Denver to Grand Junction in 2.5 hours. Alternatively, you can drive; or take a bus. When traveling from Denver in May, plan for somewhat warmer days and about the same nights in Grand Junction: temperatures range from 73°F by day to 46°F at night. On the 14th (Sun), you're off to Green River.

Green River is a city in Emery County, Utah, United States. On the 14th (Sun), immerse yourself in nature at Green River State Park and then immerse yourself in nature at Goblin Valley State Park.

To find maps, where to stay, reviews, and other tourist information, you can read our Green River itinerary builder site.

Drive from Grand Junction to Green River in 2 hours. In May, plan for daily highs up to 76°F, and evening lows to 49°F. You will leave for Arches National Park on the 15th (Mon).

Mother Nature kept reaching for red when she painted Arches National Park's 2,000 sandstone arches, resulting in one of the country's more distinctly shaped and colored landscapes.

Start off your visit on the 15th (Mon): get great views at Lower Delicate Arch Viewpoint, then stroll through Delicate Arch, and then take in the dramatic natural features at Fiery Furnace. Keep things going the next day: explore the striking landscape at Landscape Arch, explore the striking landscape at Windows, then take in the dramatic natural features at Double Arch, and finally don't miss a visit to Wolfe Ranch.

To see photos, where to stay, and tourist information, read Arches National Park travel planning site.

Getting from Green River to Arches National Park by car takes about 1.5 hours. In May in Arches National Park, expect temperatures between 76°F during the day and 49°F at night. On the 17th (Wed), you're off to Canyonlands National Park.

Canyonlands National Park features myriad canyons and buttes that the Colorado River, Green River, and their tributaries have carved over millions of years in hues of red and orange.

Start off your visit on the 17th (Wed): explore the striking landscape at The Needles and then appreciate the extensive heritage of Monument Basin. On the next day, take some stellar pictures from Grand View Point Overlook, then explore the striking landscape at Mesa Arch, and then explore the striking landscape at Island in the Sky.

To see photos, maps, traveler tips, and other tourist information, use the Canyonlands National Park day trip planner.

Traveling by car from Arches National Park to Canyonlands National Park takes 1.5 hours. In May in Canyonlands National Park, expect temperatures between 76°F during the day and 49°F at night. Cap off your sightseeing on the 19th (Fri) early enough to go by car to Capitol Reef National Park.

Capitol Reef National Park takes its name from a particularly rugged and scenic section of the Waterpocket Fold, a geologic "wrinkle" stretching for 160 km (100 mi) along a dry plateau surrounded by white Navajo sandstone cliffs and domes, and red canyons, buttes, and rock bridges.

On the 19th (Fri), admire the landmark architecture of Fruita Schoolhouse, then steep yourself in history at Gifford Homestead, and then steep yourself in history at Fruita Campground. Here are some ideas for day two: look for all kinds of wild species at Capitol Reef National Park .

To see ratings, traveler tips, maps, and more tourist information, use the Capitol Reef National Park day trip planner.

Traveling by car from Canyonlands National Park to Capitol Reef National Park takes 3.5 hours. Traveling from Canyonlands National Park in May, expect Capitol Reef National Park to be slightly colder, temps between 63°F and 31°F. Finish your sightseeing early on the 21st (Sun) to allow enough time to drive to Cannonville.

Cannonville is a town in Garfield County, Utah, United States, along Utah Scenic Byway 12. Start off your visit on the 21st (Sun): get great views at Fairyland Point, stroll through Rim Trail, and then tour the pleasant surroundings at Sunset Point.

To see maps, where to stay, other places to visit, and more tourist information, refer to the Cannonville day trip planning app.

Drive from Capitol Reef National Park to Cannonville in 2.5 hours. In May, plan for daily highs up to 63°F, and evening lows to 31°F. You will leave for Kanab on the 22nd (Mon).

Kanab is a city in and the county seat of Kane County, Utah, United States. Kick off your visit on the 22nd (Mon): get engrossed in the history at Kanab Heritage House Museum, then identify plant and animal life at Best Friends Animal Sanctuary, and then scramble along the landscape with a canyoning and rapelling tour. On the next day, explore the wealth of natural beauty at Canyon Overlook Trail.

For where to stay, photos, more things to do, and other tourist information, refer to the Kanab vacation maker tool.

Traveling by car from Cannonville to Kanab takes 2 hours. Plan for a bit warmer temperatures traveling from Cannonville in May, with highs in Kanab at 76°F and lows at 41°F. Wrap up your sightseeing on the 24th (Wed) early enough to drive to Las Vegas.

Nicknamed the "Entertainment Capital of the World," Las Vegas sits in the middle of a desert in the southern section of Nevada.

Kick off your visit on the 24th (Wed): admire the natural beauty at Bellagio Conservatory & Botanical Gardens and then explore the wealth of natural beauty at Red Rock Canyon National Conservation Area. Get ready for a full day of sightseeing on the next day: examine the collection at The Mob Museum, then don't miss a visit to Fountains of Bellagio, and then get a taste of the local shopping with The Strip.

Start your trip to Las Vegas by creating a personalized itinerary on Klarna Trips.

You can drive from Kanab to Las Vegas in 3.5 hours. Alternatively, you can do a combination of car and bus; or do a combination of taxi, shuttle, and bus. The time zone changes from Mountain Standard Time (MST) to Pacific Standard Time (PST), which is usually a -1 hour difference. When traveling from Kanab in May, plan for somewhat warmer days and much warmer nights in Las Vegas: temperatures range from 87°F by day to 64°F at night. You will have some time to spend on the 26th (Fri) before leaving for home.