Wonderland Trail
All other Mt. Rainier hikes pale in comparison to this stunning 93-mile trek, which completely encircles the mountain. The trail passes through all the major life zones of the park, from the old-growth forests of the lowlands to the alpine meadows and goat-haunted glaciers of the highlands—pick up a mountain-goat sighting card from a ranger station or visitor center if you want to help in the park's effort to learn more about these elusive animals. Wonderland is a rugged trail; elevation gains and losses totaling 3,500 feet are common in a day's hike, which averages eight miles. Most hikers start out from Longmire or Sunrise and take 10–14 days to cover the 93-mile route. Snow lingers on the high passes well into June (sometimes July); count on rain any time of the year. Campsites are wilderness areas with pit toilets and water that must be purified before drinking. Only hardy, well-equipped, and experienced wilderness trekkers should attempt this trip, but those who do will be amply rewarded. Wilderness permits are required and the campsite reservations are highly competitive; you can enter an optional lottery for early access to the reservations system. Difficult.