"Relatively" is an understatement. They are in an extremely low orbit compared to regular satellites, maintaining just 3% of the altitude of those used for satellite television.

I'm curious if Mark can also track the Starlink satellites already in orbit given the conditions he mentioned, though I take it he might need more than the naked eye for that?

LEO sats are usually in orbit around 120 miles from Earth. They have very small footprint coverage, hence there are so many needed. Also, they have very short life span.
Now, if anyone can spot them with naked eye at altitude of 120 miles, they can now stop eating carrots.

I'll just come back to this - I have no idea when they might have been launched but their track was about west north west to east south east from a position as best I can say from a little south of Cordoba to about over the top of Jaen. A quick look at this video which says it's taken "after launch" has the same view at roughly 1 minute in that I saw with the naked eye (I suppose 'before launch' would have been a bit difficult).


Two nights later I saw them again but further south, again wnw to ese (I may be a few degrees out on that but I'd be close) and I'd estimate probably about the level of Lucena. I do have long views from my house and minimal light pollution.
After that there was nothing and I presumed they'd gone too far south for me to see. I didn't look then to try and track them.
A website says, "Starlink satellites are easier to see a day or two after their launch and deployment then become progressively harder to spot as they climb to their final orbital height of around 342 miles (550 km). "

That is quite spooky. I can easily see how someone could mistake this for UFOs, and with the numbers in video it would almost seem like an invasion had just begun.

I certainly had a blank minute wondering what it could be then realised.

You can still see them with the naked eye once in position. I've seen a few during the summer months and checked them on the link below:

SpaceX Starlink Satellites Tracker (findstarlink.com)

We loved the launches, we would go up to the roof with a glass of wine to watch them

You can see them being launched in/from Valencia?

I'm only able to find some in the "Timings with average visibility" category? Will that be good enough or a waste of time?

I mean the part after launch, when you see them trailing through the sky. I only saw that when they were first launched a few years back, but not from Spain. I guess you would still be able to see it from here though.

Astera, on a clear night you should see them yes. Only for a few minutes though.