A friend of mine, now sadly passed away, used to have a speed session from outside his house. He used to run out 3 miles and come back fast.
He moved house to about six miles down the road, but like the session so much he used to drive to his old house, do the session and go home.
One day when he got back to his car he looked in the small pocket in his shorts - no car keys. So he looked behind the bush where he had his pre-run pee. No keys. So he ran back to the turn around point and looked in the bush where he had had a pee before coming back. No Keys.
So he ran back to the car. Total distance now 12 miles. Then he decided run home and get the spare keys. Distance now 18 miles.
While his wife was searching for the spare keys he went for a dump. As he pulled down his shorts the keys dropped out of the crutch. So he finished his buisness then ran back to the car.
Total now 24 miles.
Pretty good workout for a 6 mile training run.