Track Workout (200,400,600) pyramid + 300 yd shuttle

2 x (200m, 400m, 600m) with walk rest 100, 200, 400
1st set/2nd set
200 - 39 sec/36 sec
400 - 1:26/1:28
600 - 2:21/2:19
-
2 x 300 yd shuttle run
?? / 1:15