How far can you ride in 24 hours? Register for the 2011 CASA Cycling Challenge and find out. The Challenge begins at 2 p.m. Aug. 6 on the two-mile Subaru test track in Lafayette, Indiana, and concludes at 2 p.m. Aug. 7. A sophisticated electronic lap-counting system will be used to ensure accurate mileage totals. Individuals and teams decide when to ride and when to rest. How far you go in 24 hours is completely up to you and your physical abilities. More details will be posted soon. Online registration begins Feb. 1.