While many riders still participate in both sports, they remain very distinct activities.

Critical Mass has no organizers, and there's no way to know how many riders will participate in any given month.

Long-distance riders may participate in a number of structured and unstructured events.

No more than four riders participate simultaneously in this test of both speed and sprint endurance.

In October 2008 more than 16,000 riders participated in this ride.

The ride began in 2007; in 2011, approximately 2,500 riders participated.

In 2006, an estimated 20,000 riders participated in the event.

Over 33,000 riders participated in the 2007 Tour de Cure.

In 2009 3,000 riders participated and 2,200 completed the full course.

Between 1,000 and 2,000 riders participate in this great ride every year.