When racing you end up with a time and a position but how do you quantify this into a performance rating? 10th sounds good but in a field of 40 it's not quite as good, conversely 120th sounds bad but in a field of 1000 it is good.
I have started using the formula 100%-(your position/number of runners). This gives you a score as you would get in an exam (10th out of a hundred earns you 90%,etc) so in effect you score yourself for each race. This gives you somthing other than a time to compare your performance with.
You could also do it is a time differential between the course record or winning time and your time I guess.
Just wondered if anyone else uses somthing similar to monitor/record race performances?