How do you measure up? The runners percentile calculator

Compare your running time to the time of your fellow runners. Results are based on 35 million results collected in the last 20 years from more than 28,000 races. 

Using this calculator you can see how many people, in general, are slower than you at the distance you are competing at. Also, you can compare yourself to the people of your gender and age group. 

For a detailed analysis of American runners, check this state comparison.