I needed a way to track my Endless Pool workouts, so I built one

I mentioned this briefly in my race report about this year’s Ironman 70.3 St. George, but for the past few weeks I’ve been swimming in an Endless Pool, since the Teton County Rec Center’s lap pool remains, alas, closed for the foreseeable future. It’s been an effective training tool, but one of the annoying things about it is that it’s hard to track my workouts—there are no “laps,” so all I can do…