Originally Posted by GoingAway
the newer garage has much faster in/out access if you use the airport road (by the Marriott) and ignore the posted signs.

Indeed! The signs make you loop around WV to get out of IAD. What were they thinking...
A good exercise being the only saving grace, the walk from the Main Terminal to the DGs is still very long. And for $15/day!
On the other end of the extreme: from touchdown at DCA to walking thru' my front door last night - 25 minutes. And I even parked in economy. If I'm lucky, it takes all that to get from C/D to DG1.