“Based on the Ciclovía model from Bogotá, Colombia, it’s when organizers, city and county officials close a stretch of city streets to all motorized vehicles and open up the roadway for people to bike, skate, run, stroll, ride a scooter and just enjoy the neighborhood, close up.

[3] The first CicLAvia event, on October 10, 2010 opened a stretch of streets from East Hollywood through downtown Los Angeles into Boyle Heights.

The birthday event celebrated over a decade of open streets in which people could bike, skate, run, walk, skateboard, and spectate.

Over 50 subsequent CicLAvia events have taken place in communities across Los Angeles County, usually covering a 5-10 mile stretch of city streets.

The longest event to date was the April 2013 CicLAvia—To the Sea, which ran 15 miles from Downtown Los Angeles to Venice Beach.

[26] A separate study measured the air quality impacts of a CicLAvia event in downtown Los Angeles, finding a substantial decrease in particulate matter and ultrafine particles along and near the route.