User blog:ImagoDesattrolante/Meta Ridley is pretty fast as well

https://www.youtube.com/watch?v=tXnRyiMshOI

At the end of the video, Samus' ship travels from Frigate Orpheon to Tallon IV in about 14 seconds. And Meta Ridley keeps up with her - even outspeeds the ship.

That's a distance of 226 kilometers, the wiki says.

226/14 = 16.1428571429 km/s or Mach 47.06372344868804.

Samus can also react to and tag Meta Ridley's speed, so this should scale to her - and likely Meta Ridley by proxy

So likely Mach 50 for both of them

Fairly sure they do go faster than this later on