In South Florida, it's easy to live under the assumption that the western edge of civilization lies somewhere around your Aunt Debbie's condo in Tamarac, but that would be a shame. Broward County stretches far beyond the houses and strip malls, into the python-filled plumbing works of the Everglades. Between those two worlds, there is a dividing line: a set of levees that runs from Lake Okeechobee all the way south to Homestead, maintained by the South Florida Water Management District. There's a two-lane packed-dirt path on top that's perfect for mountain biking or a jog. Time it right and catch the sun setting over the sawgrass in the cooler part of the day, but be sure to bring ample water and about-face toward home before dark. For easy access to the trail north of Alligator Alley, park near the dog park at Markham Park and cut down to the access trail at the park's southwestern corner.