If timing yourself isn't your cup of tea, you should do a pace count for yourself.
If you have a trip odometer on your car, zero it out by a landmark like a street corner - be as accurate as you can. Then drive until your odometer hits .1 mile and stop immediately, note a good landmark at that spot for your end point.
Now that you have done this, you need to walk from your start point to the end point. Start off on your left foot and count every time your right foot hits the ground. You could count when every foot hits the ground, but imagine trying to keep up with a count like 132 when you could as easily count to only 66. Do this 4 times, start to end, end to start, start to end, then back one more time doing counting your pace each time. At the end, add them up then average it out. The result is your pace count. My pace count for 100 meters is 62, and for 1/10th of a mile is 100, but yours could be a lot more or less depending on your stride.