The shortest driving distance is 395 miles.
40 - 50km to Ad Dammam from Al Khubar, Saudi Arabia
The driving distance from Dammam, Saudi Arabia to Al-Rastan, Syria is 1,210 miles Rastanura is not in Syria, but in Saudi Arabia (is an Oil site), my father worked there in the 50ies :-)
No, Saudi Arabia is not in far North Asia. It is in South West Asia.
7271.51 miles
Saudi Arabia, Yemen and UAE are the neighbours of Oman
Saudi Arabia so far
The USA by far.
As far as I know, Numrah Masjid is in Saudi Arabia
Makkah.Mecca
The largest oil producer in the world is the United States.
The far between Palestine and Yemen is the tall area of Saudi Arabia and Jordan
Of the countries listed, Saudi Arabia is by far the biggest. However, it is worth noting that you listed five countries, not six.