 Target running time

 
Assuming that you are consistently the same percentage off world record time, this calc gives you a target time for any distance, since world record times fall on a straight line on a loglog plot.
 
Men's world record times at distances from 100 m to 50 km were used for this algorithm, specially developed for CalcTool. Remember that different physiologies are better at running different distances, so this calc should only be used out of interest or as a rough guideline. Enter a distance, your time for that distance, and a distance you are interested in, and let CalcTool do the rest!  