Notes:The attached pictures are from a trip I took to Oshkosh in 2002 in my 1965 PA28-180, Cherokee 180C. We were flying over South Dakota and had some pretty good tailwinds. How often do you see a Cherokee go 225 MPH?
The second picture was returning to Oregon, over Cheyenne Wyoming - talk about headwinds! 33 MPH - I could have gone faster on a scooter!