Calculator to help runners increase their weekly base mileage in a consistent fashion. As mileage increases, the time spent at each training milestone increases as well.

Sample estimates with the current formula:

• 0 to 20 miles = 4 months
• 0 to 40 miles = 11 months
• 0 to 100 miles = 3.2 years

This calculator is for entertainment purposes only. Consult your doctor before starting any sort of training plan.

Usage

var Training = require('base-building');

// How long do I train at 3 miles per week (mpw) before upping my mileage?
Training.makeWeeksHuman(
  Training.weeksAtMileage(3).weeksAtThisLevel
);

// I've been training at 10 miles mpw, what should my new mileage be?
Training.weeksAtMileage(10).milesAtNextLevel;

// How long will it take me to go from 10 mpw to 40 mpw?
Training.makeWeeksHuman(
  Training.weeksToGoal(10, 40)
);