Jessica Allen of Australia kicked off the road world championships in style Monday by claiming gold in the junior women\'s time trial. Allen was last to start the 13.9 km race against the clock from a field of 39 and went on to clock a winning time of 19min 18.63sec. The 18-year-old\'s winning performance ended the title hopes of Britain\'s Elinor Barker, who moments earlier had timed 19:20.47 to push provisional leader Mieke Kroger of Germany down into second place. Barker, 17, took silver while 18-year-old Kroger, who had set the early pace in 19:21.43, took the bronze. The first day of the week-long event concludes Monday with the under-23 men\'s time trial.