Among the many hiking offerings on this week's calendar are visits to several of our favorite trails.
Fern Valley: Casey Trees is leading a tree walk on the National Arboretum's Fern Valley Trail on Saturday (Free). It's a beautiful section dedicated to native trees and plants.
Northwest Branch: on Sunday, the Audubon Naturalist Society is back out with a hike on this gem of a trail along the northwest branch of the Anacostia River, in Montgomery County ($20-28).
There are plenty more ideas of things to do on the calendar. We'll see you out there!