Berlin’s defunct airport is a mecca for fitness buffs, with old runways now providing the perfect slick surface for biking, skating, and of course, a relaxing jog (which actually isn’t pronounced with a silent “j” in German, as one might expect). During the summer it’s an especially charming site with picnickers, outdoor grilling stations, and colorful kites peppering the sky. Considering there’s very little shade, this route is best saved for a slightly overcast day (but as we know in Berlin, there are plenty of ‘em).
Grünewald is the heavyweight of Berlin runs, with over 100 miles worth of paths. While it’s much less crowded than Tiergarten, some of those trails are quite rugged and patchy, so you’re best to GPS a solid route and stick to it. You can’t go wrong circling around the lakes Grunewaldsee and Schlachtensee, but if you’re up for a challenge, hit Teufelsberg, or in German, “Devil’s Mountain” (it’s actually less intimidating than it sounds). It’s Berlin’s second-highest mountain made totally out of World War II rubble, with a former NSA spying station perched on top.