Hoy nails 500-meter mark
British cyclist Chris Hoy broke the high-altitude 500-meter world record at the outdoor velodrome in La Paz, Bolivia, on Sunday. Clocking a time of 24.758sec, Hoy's time knocked a massive 1.092 seconds off the previous record set by Frenchman Arnaud Duble at the same Alto Irpavi velodrome venue in 2001. Hoy had earlier failed for the second day in succession to beat the high altitude one kilometer record set by another Frenchman, Arnaud Tournant, seven years ago. Hoy, the Olympic and world kilometer champion, clocked 0:58.880, missing out on that record by just 0.005 of a second. It