Delta-v required to return from Mun

[Zerodaspace]

What is the delta-v required to return from the mun?

[m4v]

A little less than 1000 m/s

[John FX]

from launchpad to launchpad including mun landing, 7500+

Mun surface to KSC is, as stated, about 1000. This assumes you airbrake to a reasonable orbit before aiming to land at KSC. I`d add 100-200 more for wriggle room depending on how close to KSC you want to get.

[Pecan]

a) ON Mun, around Mun or just 'Mun altitude orbit'?

Return to where?

Assuming you're landed on Mun this deltaV map shows it will take a minimum of 580 (to re-orbit) + 230 + 80 = 890m/s. As the others have said, you should give yourself something like 10% margin for error, so call that 979 and round it up to ... well, what do you know, about 1,000m/s, just like the others said :-)