I was asked to post some stretches that you guys can do at home. In general, I would say to stretch anything that feels tight or sore, either by doing bodyweight stretches or by using a stretching tool like a lacrosse ball or foam roller.
This video is a follow-along stretching video for swimmers that is 20 minutes, it’s a good routine to follow if you aren’t sure what to stretch:
20 Minute Swimmers Flexibility Routine (FOLLOW ALONG)
Based on the high volume of running we did today and yesterday, I would also recommend foam rolling your calves, hamstrings, quads, glutes, and lower back. Make sure to roll the insides and outsides of both muscles for about 30 to 60 seconds. If you have a lacrosse ball, use it to roll the arches of your feet as well.