Union Falls in Yellowstone National Park. 15.6 miles - Moderate to Difficult. At a height of 260 feet, Union Falls is the second highest waterfall in Yellowstone. Its unique shape makes it one of the park's most picturesque landscapes. Combine this hike with a trip to Terraced Falls Trail and you'll enjoy a rewarding day in Yellowstone's Cascade Corner.
Horsetail Falls, Lake Tahoe Moderate: 3.0 miles, 1-3 hours A three mile round-trip hike gets you up close with this spectacular Tahoe waterfall. Late spring and early summer may be the best times to experience Horsetail Falls, but a hike up the Pyramid Creek trail to this spectacular waterfall is still a worthwhile experience at any time of the year. If you can find a parking spot at the busy US50 trail-head that is.
Visiting Moab, Utah? Mill Creek Canyon has several swimming holes nestled among red rock and petroglyphs. Take a short, moderate hike along the North Fork of Mill Creek Canyon. You’ll discover a swimming hole about one mile up the canyon, and another one a half-mile beyond that.