The Earth is not 13 km in diameter. Maybe you meant 13 Mm, or roughly 13 000 km? The result is ~3 billion km/h then. I haven't timed it, but that seems to align with how long the animation took (around half of a minute).

I timed it, and it was about a minute, so right in line with the 7k pixels/s. That does translate to about 3 billion km/h, or about 250,000 mh/s².