Run

Timed Intervals / Threshold

4 x 2:00 @ T pace w. 1:00 running recovery

1 x 7:00 @ T pace w. 2:00 running recovery

2 x 4:00 @ T pace w. 2:00 running recovery

7 x 1:00 @ T pace w. 1:00 running recovery

Challenging core routine from Building a Better Runner, Vol.2 from RunningDVDs.com