Here’s a lovely half-day hike near Frederick, MD to stretch your legs before beginning another long week. At the Gambrill State Park, we will follow a series of trails where we will be able to enjoy the beauty of Catoctin Mountain and admire its greenstone outcrops. We’ll also take in an expansive view of the Maryland countryside from the North Frederick Overlook, with more open vistas than usual because the trees are still bare. This will be a moderate loop hike of 7.4 miles with some elevation changes over rolling terrain and well-graded though sometimes rocky trails. Bring beverages, lunch, winter-worthy footwear, layers, and about $7 for transportation and trip fees. Meet at 9 a.m. at the Grosvenor-Strathmore Metro Station to form carpools.