I have run the same distance in the last 3 days (7.9 miles - I know what you are thinking... but this is a nice course so I am not going to go round the block to make it 8!). and to my amusement I have run it in the exact same time (1:02:30) for 2 days, so this morning I decided not to use the watch.
I started the time and changed function so I would not see it. I went running and I found it a nice ride, the first and last miles are up hill, so I knew I was going to suffer.
Then I got back home and stopped the time. Can you imagine my surprise when I saw the time: 1:02:30!
It's nice when things work