Wildwood Trail, Portland, OR
Bite off a little piece of Portland's 30-mile Wildwood Trail where it winds through Hoyt Arboretum; with Douglas fir flanking the narrow path most of the way, you'll be sheltered even if it's raining. (Likely.) For a 4-mile loop, start just above the Oregon Zoo; glimpse the Japanese garden, then turn left onto the Redwood Trail through a sequoia grove. Cross Fairview Boulevard and follow signs to Overlook Trail; turn right on Wildwood and you're back where you started ― and ready to eat. 4000 Fairview Blvd.; www.hoytarboretum.org.