June is Walk and Bike month in Boulder! April 2, 2011 by Lisa S Leave a comment Save the date: June 5th! The Boulder Bike Underpass Choir will be singing in a bike underpass somewhere along the Boulder 360 Ride route on Sunday, June 5th. Stay tuned for more info to come! Advertisements Share this:ShareTwitterFacebookEmailLike this:Like Loading... Related Author: Lisa S The Boulder Bike Underpass Choir loves to sing in the Boulder bike underpasses where the acoustics are superb!