Brian and I descended back to ~7,000 feet for dinner in a small-town Indian restaurant in Nederland, Colorado, west of Boulder. By then, both our heads ached like a bad hangover, and my lungs literally burned when I tried to inhale anything but shallow breaths. Add generalized joint pain, and I had a full-blown case of altitude sickness. Given that I am a noted hypochondriac, I expected the worst. 

Snuggled in a peaceful valley not far from Glenwood Springs, Colorado, Four Mile Creek Bed and Breakfast is located along the picturesque Four Mile Creek just 8.4 miles from the Glenwood Hot Springs Pool. It is surrounded by an expanse of green, natural space perfect for pleasant strolls. There are also plenty of comfortable outdoor sitting areas. A hot breakfast is offered in the morning in the main dining room. In the valley just a short drive away is Sunlight Mountain Resort Ski Area with great skiing in the winter and excellent hiking after the snow melts.
The Signature Jill's Restaurant has an outdoor terrace with mountain views and serves contemporary American & French cuisine with organic ingredients. The T-Zero Lounge serves signature martinis, cocktails and fine wine. Live entertainment is offered almost every night. If you are celebrating a special occasion, the private dining room can seat up to 25 guests. The terrace can be reserved for private parties in the summer. Room rates start at $249 per night. Things to Do in Boulder
You can get maps and info at the Estes Park Visitors Center and catch a free shuttle bus to most main attractions. Intrepid adventurers will find an almost endless list of outdoor activities to try, including mountaineering on Longs Peak, thrilling white water rafting, hiking, biking, backpacking, skiing and snowshoeing. Less daring visitors can enjoy the River Walk, take a scenic drive, play a round of golf, or do some wildlife watching. Things to Do in Estes Park
Regardless of whether or not you have seen cliff dwellings before, you will be blown away by Mesa Verde and the amount of access to the actual ruins that the park allows visitors. The park's centerpiece, Cliff Palace is one of the most impressive dwellings in the entire Southwest, with a dramatic setting and incredibly preserved ruins. Ranger-led tours, which run regularly during the summer high season, allow you to climb ladders right up into the heart of the dwelling. If you aren't up for that level of activity, you can get a full view of the site from a nearby overlook.
Glacial geology in Rocky Mountain National Park can be seen from the mountain peaks to the valley floors. Ice is a powerful sculptor of this natural environment and large masses of moving ice are the most powerful tools. Telltale marks of giant glaciers can be seen all throughout the park. Streams and glaciations during the Quaternary period cut through the older sediment, creating mesa tops and alluvial plains, and revealing the present Rocky Mountains.[61] The glaciation removed as much as 5,000 feet (1,500 m) of sedimentary rocks from earlier inland sea deposits. This erosion exposed the basement rock of the Ancestral Rockies. Evidence of the uplifting and erosion can be found on the way to Rocky Mountain National Park in the hogbacks of the Front Range foothills.[60] Many sedimentary rocks from the Paleozoic and Mesozoic eras exist in the basins surrounding the park.[62]
Thanks to a wide variety of things to do and places to see, Boulder is arguably one of the best weekend getaways in Colorado—if not the whole Western United States! This college town (home to University of Colorado Boulder) has it all: hike the Flatirons or Chautauqua Park in the morning, tour the Celestial Seasonings Tea Factory and Leanin’ Tree gallery in the afternoon, and then head to Pearl Street for shopping, drinking, and dining at night—and get around on the Boulder Creek Path in between. A Boulder bike tour helps you fit in even more sightseeing, perfect for a quick itinerary.
Located at the foothills of the majestic Rocky Mountains at the elevation of one mile, Denver is a modern, vibrant city with a rich mix of industry, art and history. Explore the city’s bustling downtown with one of the guided Bikalope Tours. Visit the Kirkland Museum of Fine and Decorative Art that includes works of more than 80 internationally recognized architects such as Frank Lloyd Wright. Denver Art Museum has 68,000 art pieces from all over the world and a significant collection of American Indian Art.

^  This article incorporates public domain material from the Library of Congress document: "Majestic view from the old, one-way, dirt Fall River Road in Rocky Mountain National Park in the Front Range of the spectacular and high Rockies in north-central Colorado". Library of Congress - Prints & Photographs Online Catalog. Retrieved October 28, 2016.

Located in in southwestern Colorado, Mesa Verde is home to the famous cliff dwellings of the ancient Anasazi people. It is one of the most significant archeological preserve of Native American culture in the US. In the 12th century, the Anasazi start building houses in shallow caves and under rock overhangs along the canyon walls. The most famous of these is Cliff Palace. The Ancient Puebloans constructed it from sandstone bricks, and mortar made from ash, clay and water. It encompassed 150 rooms and 76 open areas. Climatic change and increased population placed the communities under stress and by the late 1270s, the Ancestral Puebloan population began migrating to what is now New Mexico and Arizona.
Larger groups and families on longer stays can choose to stay in private, fully-equipped condos overlooking the park, all of which feature spacious living areas, superior facilities, and a complimentary gourmet breakfast each day. Dine in style at one of four restaurants and bars that serve an array of seasonal cuisine, unwind in the exclusive Aspire Spa with an indulgent treatment or massage, and enjoy a range of fantastic outdoor activities throughout the year, including hiking, biking, fishing, horseback riding, skiing, snowboarding, ice skating, and sleighing. Read more about Estes Park, one of the top Colorado destinations.
The Experience: Super close to Manitou Springs, you'll find another town called Colorado Springs, which is also in the Pikes Peak region. While you're there, you have to see the park known as the Garden of the Gods. As its title implies, it's pretty otherworldly. With incredible, oddly shaped sandstone rock formations, you'll want to spend all day here. You should also pay a visit to the Royal Gorge Bridge, an insanely high, dramatic bridge between the canyons. Then head to the upscale resort Broadmoor.
Take in the beautiful scenery of Colorado's Front Range, the gateway to Rocky Mountain National Park, as you zip through the trees! Just a 30-minute drive from downtown Denver lie three of Colorado’s longest zipline tracks. 6-line Zipline: Enjoy 4 hours of fresh air, scenic views and thrills on the 6-line zipline in the Rocky Mountains. Ride on six lines that range from 850 feet (259 m) to 1,900 feet (579 m). Soar through the treetops and experience three of Colorado’s longest ziplines! There is a 10-minute uphill hike between the first and second zipline and minimal walking between the others; above-average physical condition is recommended.
_{Zach Zehr, an avid backcountry adventurer, spends a lot of time in Rocky Mountain National Park, which is open but operating with a limited staff since Dec. 22, 2018, due to the federal government shutdown. Because of the shutdown, the roads aren’t being plowed so much of the park is not open to vehicle traffic. Fat bikes, however, work just fine. Zehr, who is also the manager at the Estes Park Mountain Shop, and some friends rode their fat bikes to the Bear Lake Trailhead and did a backcountry ski trip in the park on Jan. 6, 2019. (Provided by Zach Zehr)}
Crested Butte may be off the beaten path, but it’s worth the trip as one of the most stunning mountain towns in all of Colorado. The atmosphere is one that combines the charms of a historic mining town with hippy flair. Set at the base of the Rockies, it’s world-renowned for skiing, but in the warmer months, it becomes a top hiking and mountain biking destination, as well as drawing countless visitors for the chance to take once-in-a-lifetime whitewater rafting adventures through the Taylor Canyon. A true mecca for mountain bikers, there are hundreds of miles of trails linked together to create an endless day of touring from Gothic to Mt. Crested Butte, Irwin to Gunnison, or even from Crested Butte all the way to Aspen. If you don’t have a bike, stop by Big Al’s Bicycle Heaven and rent one for the day or for the length of your stay. In addition to riding the trails, you can ride around town and check out all the historic buildings and funky alleyways.
Located at the foot of Pikes Peak, Colorado Springs draws visitors who come to see the view from the mountain that inspired the writing of the song “America, the Beautiful.” Some hike to the mountain’s 14,115-foot (4,302 meter) summit while others drive or enjoy a ride on the Pikes Peak Cog Railway. With its sculptural sandstone formations and balancing rocks, the Garden of the Gods is another popular natural attraction. This culturally rich city has many museums worth exploring too, including the Fine Arts Center, Pioneer Museum and the Rock Ledge Historic Site, an open-air museum where costumed docents depict life in Colorado Springs throughout its long history.
_{It’s hard to beat the majestic setting at The Peaks Resort & Spa in Telluride. This property is surrounded by the dramatic peaks of the Rockies in the southwestern region of the state, and is particularly renowned for its spa. Here you can indulge in a variety of rejuvenating treatments like hot stone therapy, soak in the eucalyptus-filled Jacuzzis or take advantage of personal training sessions. Enjoy your days taking part in outdoor adventures like mountain biking or hiking the spectacular trails and then come back to enjoy a}
Considered the base camp for the Rocky Mountain National Park, Estes Park is less than a 2-hour drive from Denver. Located near the east entrance to the Rocky Mountain National Park, Estes Park is a quiet area surrounded by protected land. Here you’ll find pristine wilderness with a myriad of both indoor and outdoor activities, from scenic hikes and bike trails to wine tasting and spa treatments. Take the Estes Park Aerial Tramway to the top of a small peak and soak in breathtaking panoramic views of the valley and downtown area, take a walk along the Riverwalk in Downtown Estes Park or take the kids to the Estes Park Ride-A-Kart & Cascade Creek Mini-Golf.

With majestic mountains, tundra wildflowers, abundant wildlife, Trail Ridge Road (the highest paved road in the US), and over 350 miles of trails, Rocky Mountain National Park is spectacular!  From flat easy hikes around a mountain lake to challenging multiday backpack trips and climbs, Rocky Mountain National Park offers trails for hikers of every level - let us help you plan your adventure!  Find the best ways to take in the majesty and serenity of the park.  It's YOUR Rocky - explore it!

It may be summertime but Snowmass has returned to the Ice Age with the Snowmass Ice Age Discovery Center that features the most significant Ice Age ecosystem find in Colorado history (and it’s free). Touch a mastodon tooth, marvel at a half-sized 6-foot Wooden Mammoth Skeleton, do a dig of your own or a daily Ice Age Discovery Hike by  Environment Studies.  Visit the Snowmass Rodeo on Wednesday nights (June 12- August 28) and sign up your kids for the Calf Scramble and Mutton Busting. Ride the Elk Camp Gondola up Snowmass Mountain where the Elk Camp Restaurant will open for activities including downhill biking, dinner, campfires, live music, movies, Stryder Park and Kid’s Playground on Friday evenings. Try your hand at some slopeside bowling at the new bowling alley below Venga Venga Cantina featuring eight full-sized lanes, a lounge area with full bar, wood-fired oven pizzas, upscale bar food and more. Then, get inspired at the Anderson Ranch Arts Center, a stellar place for kids of all ages to take workshops that include sculpture, photography, painting, beading, and mask-making.

Explore the nearby great outdoors at the Horsetooth Mountain Open Space or get your adrenaline pumping by rafting on Cache La Poudre River with the Mountain Whitewater Descents Company. Visit Global Village Museum of Arts and Cultures to learn about folk art from all over the world. Take the kids to the Farm at Lee Martinez Park to learn about the farm life and play with baby farm animals.

A small city that packs a lot of punch for its size, Vail is one of the most beloved ski destinations in the country, where its not uncommon to spot a celebrity or two. Nestled between the Gore Mountain Range and Sawatch Mountain Range, this narrow alley is home to the largest single-mountain resort in the United States. While most visitors come to Vail for its famous 5,289 acres of ski slopes, in the summer visitors can also explore the Eagles Nest Wilderness Area and Holy Cross Wilderness area to hike the area’s rugged mountainside trails. 

Owners Wendye Sykes and Shelley Powers came to Estes Park from San Francisco looking for an escape from the grind of everyday city life — and that’s exactly what they’ve created at River Spruce. Offering nine different cabins, you’ll find lodgings suitable for couples and families all nestled amidst the scenic Rocky Mountain wilderness and along the Big Thompson River.