1 ns * c = 1 ft, to put in perspective: 7 μs * c is 1.3 miles.

(Protip: just type "7 μs * c in miles" into Google)

7 μs is also the time it takes light to travel about 1,400 Ariana Grandes.

In which direction? Presumably side to side?

Due to relativity the length of Ariana Grande will appear to change such that all observers agree on the same speed of light.

But... https://en.wikipedia.org/wiki/Side_to_Side

Oh, I haven't watched that before.