Sadly that was cancelled this year, but I know what you mean! At least the Monument - with help from local resources - has installed sensors that trigger blinking warning lights in the tunnels to alert motorists that bikers are approaching.In 2018, we spent several days enjoying the Colordao Monument area. Gorgeous! We happened to be there during the Tour of the Moon biking event! We were going west while the cyclists were riding east. I was scared to death a biker would come around a curve and plant him/herself on the grill of our truck!