Fort Collins is just an hour north of Denver, but it offers a ton of fun outdoor things to do when you want to take advantage of the sunshine. Just minutes from downtown is Horsetooth Mountain Open Space, a 2,711-acre park with 29 miles of biking, hiking, and horseback trails just west of Horsetooth Reservoir, which happens to be an ideal spot for paddling out in a canoe or kayak. Mountain Whitewater offers whitewater rafting trips on Cache La Poudre River, which flows right through downtown, while the Farm at Lee Martinez Park is an educational zoo that has animals for feeding and cuddling up with, pony rides, hayrides, and interactive adventures. Beer lovers can tour and taste at a number of outstanding area breweries, or even take a Beer & Bike tour where you can enjoy a variety of beers after a hard day of pedaling.
The Experience: If Aspen isn't quite your mountain town scene, head to Vail instead. It's equally as idyllic (it was modeled after European mountain resorts), pedestrian-friendly, and lovely, but the town itself is more of a square in a village with a small collection of boutiques and restaurants for visitors. Ride up and down the gondolas for mountain views in every direction and ski the unique back bowls. It's also closer to Denver, making it easier to get to and, therefore, a little more crowded during peak seasons.

If you were any closer to the national park, you'd be in it! No street lights, power lines or major roads. Just peace, wilderness & wildlife, and sounds of the river! Each of our 12 cabins is unique & comfy. Walk to Park trails, or fish the Big Thompson River.  Just 2.5 miles west of downtown Estes Park, dining & shopping options are never far away.  Aspen Brook Details.
Escape from the city with a romantic getaway just 30 minutes west of Denver to the Highland Haven Creekside Inn in Evergreen. This family-owned and operated Colorado Mountain B&B will charm you upon the moment of entering the wooded grounds. Their website describes it as an opportunity to create your own “Colorado Woodland Fairytale.” And it is that adorable.  Rustic. Quiet. Charming. And far enough away from it all to feel like a romantic getaway.
Enos Mills, the main figure behind the creation of Rocky Mountain National Park, enjoyed walking to Lily Lake from his nearby cabin. Wildflowers are common in the spring and early summer. In the winter, the trail around the lake is often suitable for walking in boots, or as a short snowshoe or ski. Other lakes in the Wild Basin include Chasm Lake, Snowbank Lake, Lion Lakes 1 and 2, Thunder Lake, Ouzel Lake, Finch Lake, Bluebird Lake, Pear Lake, and Sandbeach Lake. Many of the lakes have backcountry campsites. Waterfalls include Ouzel Falls, Trio Falls, Copeland Falls, and Calypso Cascades.[47]
Idyllically pinned between the crags and currents of Little Prospect Mountain and Big Thompson River, This Mountain Life makes for a serene setting to call basecamp.  Open your windows to clean crisp air, bluebird skies and sights and sounds of a winding snow-fed alpine river. Watch wildlife from Mountain Chickadees to Colorado Chipmunks and Wapiti Elk. Sleep like a log. Step out your haven in Historic Downtown to easily access top Estes Park shops, attractions and venues — from river walks to fishing spots, sweet shops to best restaurants, from care-free strolls to heart-pounding treks.  

The Pierre Shale formation was deposited during the Paleogene and Cretaceous periods about 70 million years ago. The region was covered by a deep sea—the Cretaceous Western Interior Seaway—which deposited massive amounts of shale on the seabed. Both the thick stratum of shale and embedded marine life fossils—including ammonites and skeletons of fish and such marine reptiles as mosasaurs, plesiosaurs, and extinct species of sea turtles, along with rare dinosaur and bird remains—were created during this time period. The area now known as Colorado was eventually transformed from being at the bottom of an ocean to dry land again, giving yield to another fossiliferous rock layer known as the Denver Formation.[58]
Old-fashioned hospitality is the specialty at Sylvan Dale in Loveland. During August and September, the guest ranch offers great grown-up getaways complete with home-style meals and a personal horse for your stay, plus options for overnight trail rides, trap shooting and more. Guests lend a hand with ranch chores, but come nighttime, you can kick back by the campfire to toast s’mores and mingle with fellow guests who might just feel like family by the end of your stay. Find more dude ranches in Colorado >>
The Experience: Located in an 1882 converted saloon, the Sopris House is an upscale lodge full of character. It's operated by the aforementioned Eleven Experiences, a company that's amazing at curating travel adventures. Spend the day skiing greens, blues, and blacks. For skiers who love pristine powder and feel up for a challenge, you're in for a treat. Due to elevation, Crested Butte is known for its cat skiing (a term for superb, untouched-powder skiing) since it gets about 500 inches of snow each season, which is way above the average resort.
Grand County is home to expansive views, rugged peaks and open countryside. Its premier resort, Winter Park, attracts travelers from all over for it’s world class ski slopes. Mary Jane, Winter Park’s other half, has premier bumps, tree skiing and a bowl. Situated north on Highway 40, Granby Ranch is geared for family fun, with easy learning trails, as well as night skiing on Friday and Saturday.
The unspoiled beauty of Rocky Mountain National Park draws thousands of visitors every year. With over 50 placid lakes and babbling streams, this is a popular fishing destination for both locals and visitors alike. In order to fish within the park, please note that you will need a valid Colorado fishing license. You can trek through over 355 miles of hiking trails or stick to the park roads for a bicycle ride suitable for all ages. After exploring, head to the Visitor Center to learn about the animals and plants you encountered on your hike or bike ride. If someone in your group loves horses, consider visiting the Glacier Creek Stables for the opportunity to see the area on four legs rather than two.

Other outdoor activities abound, including hot air ballooning, rock climbing, kayaking and skiing at the Eldora Mountain Resort. Boulder also has good museums, art galleries and theaters, and foodies are exceptionally well-catered for – you can visit the Dushanbe Tea House, discover fresh produce on a farm trail, taste craft beers on a brewery tour, and visit the farmers’ market. Things to Do in Boulder
If you and your valentine enjoy winter adventures, a mountain escape is perfect for a weekend away! Opt for your favorite resort or venture somewhere new to enjoy outdoor winter activities during the day, like snowshoeing, skiing and skating, and relax at night with drinks and hot tubbing. Make the weekend extra special with a horse-drawn carriage ride to dinner. Find a Colorado cabin perfect for any getaway here .
^  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.

The park may be accessed through Estes Park or via the western entrance at Grand Lake. Trail Ridge Road, also known as U.S. Route 34, connects the eastern and western sides of the park.[91] The park has a total of five visitor centers. The Alpine Visitor Center is located in the tundra environment along Trail Ridge Road, while Beaver Meadows and Fall River are both near Estes Park, with Kawuneeche in the Grand Lake area, and the Moraine Park Discovery Center near the Beaver Meadows entrance and visitor center.[9]
Durango - very popular for romantic getaways in Colorado during the summer, and for good reason. The gorgeously restored Main Ave combines Victorian-era Hotels and Wild-West Saloons, giving the city a remarkable atmosphere. There's plenty of scenic drives nearby, and the steam-engine narrow gauge rail journey up to Silverton is a wonderful daytrip.
While it is possible to travel through Rocky Mountain National Park and not catch sight of any wildlife, we venture to say that is an unlikely experience. From everyday sightings of chipmunks and mule deer to the moving experience of viewing elk in rut (the mating season), the animals in the park let you know that you are part of something truly wild. Some of these critters are harder to spot than others - they might camouflage themselves in the trees or hide in the underbrush - but look closely and you may have an encounter unlike any other. 
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