I had to drop someone off in western Montana this afternoon. The trip over was fantastic-- 110 knot tailwind! I was doing almost 400 knots over the ground, at FL270.
Of course, when we got there it was snowing, half mile visibility, and generally pretty nasty...
But on the way home... 111 knots on the nose! I watched the winds as I climbed (and on the descent going in), and they really didn't drop off much until you got into the lower teens, and with the weather as it was, I decided if I was going to go slow, I might as well be comfortable and save some gas, so FL260 it was.
It took me about 1+35 to go eastbound, and 2+45 to go home!