442 round-trip miles on the trip for me, including the Sunday jaunt to Hershey.
(According to the very reliable Mr. OTIS) I averaged 27.3 mpg from my house to Carlisle with average speeds of 75-80 mph, but only wound up with an overall average of 25.3 mpg, with all the running around in between. Still was happy, particularly with O2 sensors acting up a little!
I reset my trip odometer at the Turkey Hill so I have no round trip figures, but it would probably be around 280 miles round trip. I measured 20.5 mpg at the Turkey Hill, but that includes all my driving from last tuesday to this past sunday, which is a good mix of city and highway, and a decent amount of idling to keep the battery charged while playing music.