Running Endurance Calculator

This calculator is designed to enable endurance runners to determine safe, personalized racing paces over distances such as the marathon. The calculations performed here are based on a mathematical model by B. I. Rapoport, published in PLoS Computational Biology in October 2010. The full article, which provides background information on the physiology of endurance running and describes the model behind the calculator presented on this site, can be accessed here.

Endurance Calculator Android App: An enhanced version of this calculator, useful for runs of any distance, is now available as an Android App on the Android Market. It can be accessed here.

Enter data into the calculator using this form:

Kilograms Pounds
Age (years):
Female Male
Resting Heart Rate (beats per minute):
Target Marathon Finishing Time (hh:mm:ss):
Known Maximal Oxygen Uptake (VO2max)? No Yes: mL oxygen per kg body mass per minute
Name (Optional *):
E-mail Address (Optional *):

* Join the Endurance Calculator Beta Testing Community! Please enter your name and e-mail address, and let us share news with you as new Calculator features and the Endurance Calculator Mobile App are released. Thank you for using the Endurance Calculator, we wish you best of luck with your training and racing.