Star Trek: Enterprise (2001) S1 E1
braulio 0 points 4 years ago*. (Contains Spoilers)

If warp 4.5 does Neptune and back in 6 min (36 das), and Neptune is about 4.4 Tm from Earth.
Warp 4.5 = 24 Gm/s
Later John says that it’s easy to get jumpy when traveling at 30 000 000 km/s = 30 Gm/s