Speed Practice with 三重間歇團 at Sanchong Stadium 三重體育場. * 10 mins warm-up (2.5k 左右) * 400 m sprints 短跑 (66-72秒) x 4 * 300 m sprints 短跑 (48-51秒) x 4 http://connect.garmin.com/activity/287756086