Airports Circle Cycle

From Buckingham Fountain, circle around Midway and O'Hare airports and return.  Includes close-to an even distribution of streets (mostly bike lane) and bike paths.  A lot of stop-n-go down Archer, which could be by-passed toward Midway by taking longer routes through neighborhood streets to the south.  Crossing I-55 on Harlem Ave. is usually heavy traffic, but it is a short distance (1/4 mile) to get onto the Salt Creek Trail.