Cruise speeds

I am looking on ForeFlight and the 777 has long range cruise but what is that and how do I know what Mach number it is

Hey, I will put a link to a topic below which might help you.

Mind that that the topic was closed and unlisted. Although I believe it can still be viewed with this link.

Hi!
I found the following in a B777 fcom available online :

You might find your answer there.