回歸沖圈 : 1600m - 1200m - 800m - 400m (lap與lap之間慢jog400m) lap 01 (1600m) - 07'12"12 lap 02 (1200m) - 05'19"87 lap 03 (0800m) - 03'28"95 lap 04 (0400m) - 01'34"29