How to Mark a “Lap” in the Workout App
While you’re tracking a workout with the Workout app on your Apple Watch, double-tap the screen to mark a segment. A summary will pop up, and you can keep getting your sweat on, marking off segments and laps as you need.
How to See Your Laps (and Other Segments)
To see your segment splits, once you’re done open the “Fitness” app on your iPhone and select your workout. Tap “Segments,” and you’ll see a numbered list and all the accompanying stats.
Why Segments Matter
Average workout stats—like running pace and cycling speed—and individual mile splits aren’t much use unless you’re just doing a slow steady-state workout (or, I suppose, mile-increment repeats). For example, if you do a mile warm-up, run hard for a mile and a half, then a half-mile cooldown, the bit that matters most is between mile 2 and mile 3.5, but neither the average run speed nor mile splits in the Fitness app will tell you how fast you did it.
However, if you use the lap feature on your watch, you can run your half-mile warm, double-tap to hit lap, run hard for a mile and a half, double-tap to hit lap again, then do your cool down. Then, when you look at the workout in the Fitness app on your iPhone, it’ll be split into three segments: your warm-up, your workout, and your cooldown.
And it’s not just running and cycling you can track. If you’re doing some High-Intensity Interval Training or CrossFit style circuits, you can mark off each round.