If we say, that the PAC3 unit defending Riyadh was at the King Abdul Aziz AFB...
...and use the destruction zone of the PAC3 depicted in 2003
than it seems that the Riyadh International was well away (~15km) from the destruction zone of the PAC3
Hpasp Free SAM Simulator, "Realistic to the Switch" (U-2 over Sverdlovsk, B-52's over Hanoi, F-4 Phantoms over the Sinai, F-16's and the F-117A Stealth bomber over the Balkans.) http://sites.google.com/site/samsimulator1972/home