You can climb and slide on the dunes or test your boarding skills cruising down the sand. On hot days, children and even adults enjoy splashing around in the Medano Creek that runs along the base of the dunes. Hiking trails run through the forest on the edge of the dunes. The four-wheel drive Medano Pass Primitive Road opens up some unique terrain, and car camping sites are located along the roadside. Regular camping is available at the Pinon Flats campground, which offers both tent and RV campsites.
Rocky Mountain National ParkAt the edge of Rocky Mountain National Park, Grand Lake is the deepest natural lake in Colorado, dipping to 265 feet. Fed by high mountain runoff, the lake is clear and pristine. In the summer, you can rent a boat, bring your own or simply enjoy the gentle lapping of the waves from the sandy shore. Grand Lake connects with Shadow Mountain Lake via a canal, and just down the road is Lake Granby, the second largest body of water in Colorado.
Breckenridge is justifiably famous as one of the best ski resorts in the country, but spending a little time seeking out the off-piste charms of the town can be extremely rewarding. You can explore the thriving arts and culture scene or learn some Breckenridge history on a tour with a local expert – popular choices include the Historic Tour, the Haunted Tour and the Gold Mining Tour. In summer you can go hiking, biking, fishing, paddling and rafting, while in winter everyone heads to the slopes to enjoy world-class winter sport activities and ride the highest ski lift in the country. Things to Do in Breckenridge
To reach Rocky Mountain National Park, many travelers fly into Denver International Airport (DEN) and either rent a car and drive the 80-some miles northwest to Estes Park or take the Estes Park Shuttle, which runs frequent routes from the airport to Estes Park for $45 one-way and $85 round-trip. There is no public transportation available between the airport and the park.
The Broadmoor Hotel, built in the late 19th-century, offers lots of historic elegance and luxury for honeymooning couples along the shores of Cheyenne Lake at the edge of Colorado Springs. The vast resort offers just about everything you could ever want in a romantic getaway, including the chance to sip cocktails alongside the infinity pool while enjoying spectacular views of the lake and the jagged peaks of the Rockies. There are eight restaurants onsite, a spa, three championship golf courses and a wide range of outdoor activities at your disposal from paddle boating to horseback riding and fly fishing. The property also offers a variety of romantic getaway packages that include things like a romantic dinner for two or sparkling wine and chocolate-covered strawberries at turn-down on your first night.
Situated in Southern Colorado, the Great Sand Dunes National Park is an impressive sight. Shaped by winds blowing from and against the nearby Sangre de Cristo Mountains, the piles of sand climb to more than 750 feet (230 meters), making them the tallest dunes in North America. Sand-boarding, skiing and sledding on the dunes are the park’s most popular activities, and there are medium-size slopes to slide on located near the main parking area. A longer hike to the north brings thrill seekers to a 300-foot (90 meter) slope that tumbles onto into Medano Creek.

The Pool is a large turbulent water pocket formed below where Spruce and Fern Creeks join the Big Thompson River. The winter route is along a gravel road, which leads to a trail at the Fern Lake trailhead. Along the route are beaver-cut aspen, frozen waterfalls on the cliffs, and the Arch Rocks.[44] The trail to Alberta Falls runs by Glacier Creek and Glacier Gorge.[44]
Salida is known for its white-water rafting and gorgeous mountain scenery in southeastern Colorado. Nature-lovers, adrenaline-junkies, and ski-bums alike will all enjoy this Colorado weekend getaway. Those who want a mellow weekend trip in Colorado can stroll through downtown galleries and museums, while adventure seekers will find no shortage of heart-thumping excursions.
The Fern Lake trail passes Arch Rock formations, The Pool, and the cascading water of Fern Falls. Two backcountry campsites are located near the lake, and two more are closer to the trailhead. Odessa Lake has two approaches: one is along the Flattop trail from Bear Lake while the other is from the Fern Lake trailhead, along which are Fern Creek, The Pool, Fern Falls, and Fern Lake itself. One backcountry campsite is available.[44] Other lakes are Jewel Lake, Mills Lake, Black Lake, Blue Lake, Lake of Glass, and Spruce Lake.[44]
The rugged and elevated landscape and disused mining roads provide a challenging playground for mountain biking and off-road vehicles, while fishermen can head to Molas Lake to cast a line. You can go hiking in the San Juan National Forest, take a four wheel drive along the Alpine Loop Scenic Byway, or savor a scenic ride on the Durango & Silverton Rail Road. Things to Do in Silverton
Depending on when you choose to stay in an Estes Park vacation rental, you may be able to catch family-friendly events like the annual Teddy Bear Picnic or Longs Peak Scottish-Irish Highland Festival. If you aren't able to make it to those events, don't worry: you can always pick up some local history at the Lula W. Dorsey Museum or Stanley Steam Car Museum. Visit the local shops and galleries like the Wild Spirits Gallery or Alpenglow Images & Accents to see some local photography, woodworking, jewelry, and other crafts or pick up a souvenir or two for friends and family back home. 
Daily bus service into Rocky Mountain National Park is available weekends beginning in Memorial Weekend and then daily from June 27, 2016 to September 7, 2016 and weekends until the end of September, 2016. There are two more routes to help you once you are in the Park for Moraine Park and Glacier Basin (Bear Lake). Sorry, there are no bus routes for Trail Ridge Road or Horseshoe Park.
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. 
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