Since 1982 when the 16th Street Pedestrian Mall opened in downtown Denver, RTD has been running the Free MallRide. Today, fully electric busses travel the one-mile route from Union Station to Civic Center Station and back again, seven days a week, from early morning to early morning. Passengers can hop on and off at any street along the route at no charge. In 2015, more than 13 million riders took advantage of the complimentary busses. Weekdays the first bus starts out at 4:59 a.m., while on Saturdays and Sundays the first busses start at 5:30 a.m. and 6:30 a.m., respectively. The last bus of the day is always at 1:21 a.m. There's a lot of construction downtown these days, so check RTD's website to find out about any closures or changes in bus stops.