Easy
New York City: Popolopen Gorge Trail
Visit a lesser-known treasure of Harriman State Park on this 5.7-mile jaunt, which contours through hilly hardwood forest and along cascading creeks to a few peaceful ponds.
Los Angeles: Bolsa Chica Wetlands Loop
This 5-mile loop meanders along coastal bluffs and into wetlands in the heart of one of the finest birding spots in the United States.
Boulder, CO: Lost Lake (Winter Route)
Snowshoe into a small mountain lake on this gentle, 5-mile out-and-back in Indian Peaks Wilderness--a perfect winter getaway from the city.
Opal Lake Trail
Beautiful hike up through aspen groves and across meadows to Opal Lake.
Chautauqua trail to Ski Jump trail Loop
An easy mile and a quarter loop to get high enough to get a nice view of Boulder. Lots of other trail options to make a longer hike.