Workout

Warm-up (600)
250 swim/ 50 Kick  (repeat)

Set (1000)
3 rounds
100 free on 1:30
100 (50 kick/50 free) on 1:45
100 kick on 2:00
...100 easy

Set (1200)
12 x 100 as follows:
3 on 1:30
3 on 1:20
3 on 1:30
3 on 1:20

Cool-down (200)
200 EZ