The Lakefront Trail at Six AM

18.5 miles along Lake Michigan. Chicago's greatest public asset — pavement, parkland, and beach giving every neighborhood a front yard the size of an ocean. Start at North Avenue Beach at six, when the runners own the path and the lake is flat silver.

Running south, the skyline assembles: Gold Coast towers, the Hancock needling up, then the full downtown cluster hitting you at Oak Street Beach. The trail separates walkers and cyclists. Stay right, pass left, don't stop in the lane — Chicago-blunt etiquette.

Promontory Point on the south side is the best skyline view in the city — five miles of water north, buildings stacked like a lit mountain range. October is the month: humidity breaks, lake turns autumn-blue, skyline goes gold at five o'clock. Summer is glorious but crowded. Winter belongs to the brave — lake waves over the path, wind making your face a statement about endurance.