The Cycling House Glacier Loop Cycling Tour is a seven-day, six-night trip averaging 40 miles of riding per day along the epic Going-to-the-Sun Road and in the Many Glacier area. This all-inclusive cycling tour includes fully guided and sag-supported rides, comfortable accommodations, all meals, luggage transportation, bike build and breakdown service, and airport shuttles.
thecyclinghouse.com; $1995

Yellowstone Expeditions' guests enjoy Yellowstone National Park at a cross-country skier's pace. The multiday excursions are based from a comfortable yurt camp located only a half-mile from the Grand Canyon of the Yellowstone. Trips include backcountry yurt lodging, ski guides, all meals, and all snow-van transportation within the park. 
yellowstoneexpeditions.com; Four-day to eight-day options from $1000 - $1575

A hot-air balloon ride is a unique way to see the fragile sandstone cliffs of Arches National Park. Canyonlands Ballooning literally gives travelers a birds-eye view of these geologic wonders that were being created when dinosaurs roamed the earth. 
canyonlandsballooning.com; $269

Smoky Mountain Riding Stables gives novice and experienced riders alike a chance to enjoy a peaceful view of the Great Smoky Mountains on the back of a well-trained horse.
smokymountainridingstables.com; $60 for a two-hour ride

Yosemite is beautiful and everyone should see it, but not all on the same day at the same time. One solution is to drive a bit down the road to Kings Canyon. Boyden Cavern Adventures & Tours classifies their trips as short, medium and longer. The longer trip spans 8 to 12 hours and includes eight rappels, cold water wading, stream scrambling, and granite water slides. 
kingscanyoneering.com; $75 - $200

Everglades National Park is one of America’s world heritage sites and protects the largest wilderness area in the eastern U.S. Everglades Kayak Company offers the opportunity to get out of the tour van and off the air-boat to kayak through the maze of 10,000 islands, pull through narrow mangrove tunnels, paddle into the mysterious cypress swamp, and sea kayak in the open water of the Gulf of Mexico. evergladeskayakcompany.com; Three-day trips from $1,300

O.A.R.S. offers scenic floats on the Snake River through the heart of Grand Teton National Park. Wildlife is abundant and rafting guests are likely to see bald eagle, elk, moose, bison, river otter and possibly even bear. oars.com ; 3-day, 2-night trips start at $539