Laps
The time required to cover a fixed section, as in a race around a track is called a "lap".
a. Start
① Lap 1
② Lap 2
③ Lap 3
Splits
The elapsed time from the start of a race to any point along the way, such as the times at 10 km, 20 km, and 30 km point of a marathon, is called "split".
a. Start
b. Stop
① Split 1
② Split 2
③ Split 3