I originally measured the mile I'm killing myself to run faster over in the Rover - old clockwork mileometer.
By chance this week I re-measured it in the newer Peugeot with all singing all dancing computer thingy on it. It came to just over 1.1 miles. I measured it again 3 times - driving fast and slow just in case it made a difference (!) and it still came to just over 1.1miles. Suddenly, over night I'd transformed from someone unable to do 10min miles to someone romping round in 8min 14secs/mile. Paula watch out!!
Boy was I made up. Then reality struck a chord - who's to say the new computer mile gauge was the correct one? So I rang the garage - they said an error of up to 15% was acceptable!!! It isn't to me...I pay by the mile for my car quite apart from the running implications!
So I borrowed a wheely measuring thing from the LA and have just come back from measuring it.
RELIEF !!!!its 1671m = 1.0381 miles.
Could have been much much worse eg just under a mile - in which case I'd've had to move the dead badger which is one of my markers........
So just as a word of warning..if you think you've done a 20 mile run - accurately measured on your car - it might have been 17 miles - or 23 !