Reply To: Usrpt for 3k, 5k and 10k open waters
Your next progression may be: 20×50 on :40 with :20 rest. The distance and pace are proportional to your 25s but your rest period is less per 25. Then 30×50, then maybe 20x50s with only :15 seconds of rest. Soon you’ll be lowering the target time: 20×50 on :38 with :22 rest. Do you see how this works?
When you get the manual work on the technique elements in order. You’ll be working on body position, breathing, and body roll which will help you use less energy by decreasing drag. Then you can start working up to 75s, 100s, and 200s at your 1.5k pace.