Max Meters. Chris coaching.
Warm up
600 choice
(600/600)
Drill
2x300
#1 swim, every 3rd length nonfree
#2 swim, every 3rd length kick
(600/1200)
Main
1x600 on cruise
1x500 on cruise+5 sec
1x400 on cruise+10 sec
1x300 on cruise+15 sec
1x200 on cruise+20 sec
1x100 on cruise+25 sec
The focus on this set is maintaining an even, sustainable pace throughout. If you're swimming at your appropriate cruise interval, you should be getting just about the same amount of rest after each swim, regardless of the distance. If you can pick up your pace as the distances get shorter, by all means go right ahead.
(2100/3300)
Last set
1x100 easy backstroke
6x50 (25 hypoxic-either underwater or minimal breath swimming/25 easy) with 30 sec rest
1x100 easy
(500/3800)