This calculator is designed to help you ESTIMATE what your improvement might be for your next race if you train correctly.
The formula for this calculator is based on the data from the thousands of runners we’ve coached since 2011 and assumes you training schedule includes race specific workouts.
Simply enter your current personal best or most recent race time for your goal race distance and then let us know a little about your training.
Again, this is merely an estimate based on research and data we’ve collected on runners we’ve coached.
Every runner has a maximum potential that is impossible to predict. The closer you are to this potential, the less you’ll improve each race.
