...all of which would seem to invalidate my claim for one of the shortest "x-countrys" ever.... Though I'm sure a few have made similar trips....
Ash House Farm to Ash Croft Farm in Cheshire. Total air time less than a minute. Take off from one field, turn left and you're onto finals for the other. (Or right turn on the return trip).
Both pukka airstrips, separately owned and administrated.
Had to log it as 5 mins to count for taxi time, engine checks etc.
S'pose you could do it a few thousand times if you really wanted to clock up some x-c time but had left youre map at home