5 laps
400 meters each lap.
So, to answer this we have to multiply the number of laps by the length of each lap:
400 m x 5 = 2,000 meters
Then we have to convert into kilometers.
Since 1 km= 1000 meters
We have to divide the value in meters by 1000:
2,000 / 1,000 = 2 km
2 kilometers