Time Out says
Most guided tours take a break for the winter, but not the adventurous pedway-ers in Chicago Elevated. They've got three themed tours for the snow-covered months. Beginning in December, the Holiday Pedway Tour Extravaganza shows off the city's wondrous winter decorations; the Winter Tour, which sees attractions like Millennium Park and Maggie Daley Park; and the original Pedway tour, which never takes a break. Milwaukee Tool Company provides battery-operated heated coats, so Chicago Elevated literally has you covered.