Workout

Warmup 
10 x 50 choice rest 10 between

Set
4 x 75 on 1:15
…free/choice(drill)/free
4 x 75 on 1:15
…1:00; 1:05; 1:10; 1:15

Set
5 rounds
…odd rounds
200 on 4:00
…alt x 25 swim/kick
100 on 1:45
…alt x 25 stroke free
100 free on 1:30

…even rounds
200 on 2:40
100 IM on 1:50
100 free on 1:20

Set
8 x 25 on :30
…odds free
…evens choice