This Sunday in Boulder, Boulder Green Streets will be hosting a Ciclovia from 8am - 4pm on 10 block section of east pearl street. Portland has done something very similar with Sunday Bike Parkways.
City of Boulder Release – FOR IMMEDIATE RELEASE (8/18/10)
BOULDER GREEN STREETS TRANFORMS EAST PEARL FOR CYCLISTS, RUNNERS, AND WALKERS
The City of Boulder is the title sponsor and a key participant in Boulder Green Streets, a community-building, “street liberation project” that will transform ten more blocks of Pearl Street into a car-free bike, run, skate, and stroll zone. The event takes place on Sunday, September 19th from 8 a.m. to 4 p.m.