Workout

Warm-up (400)
300 swim
100 kick

Set (1000)
4 rounds
...Reverse IM order by round

3 x 50 (kick/drill/swim) 1:00, :55, :50
1 x 100 swim on 1:30

Main set: (1800)
2 rounds
1 x 200 on 3:00
4 x 50 on :50
4 x 100 on 1:30, 1:40, 1:30, 1:40
100ez

Warm-down (200)
4 x 50 EZ