Last night, the Lazy Dog was hopping in downtown Boulder. Gold Sprints were happening for the first time in a long time. You may or may not be familiar with roller racing so this is how Wikipedia defines it:
Rollers may also be used for roller races (goldsprints). Two or more bikes are placed on rollers side by side, the rollers are connected to a timing system. Timing systems either use modern electronics and digital projection, or a large analog clock with a hand for every rider representing their distance traveled. Roller racing was popular in 1950s Britain, often preceding films at the cinema or taking place in between dances at dance halls. Roller racing still takes place in Britain today with London's bicycle messenger community organizing events going under the name of Rollapaluza.
As for last night there were four bikes lined up on stage with a large projection screen off to the right of the stage. Statistics on each rider (i.e. speed, time etc) were displayed for everyone to see. Riders were given a count down and they raced as hard as they could for 500 meters as the music pumped and old time cycling videos played in the background. So you may ask how long does it take to sprint for 500m? Last night the fast times were in the sub 18 second time frame.