Other Running Calculators

Running Mileage Increase Calculator banner image.
Running Mileage Increase Calculator

Running Base Building Calculator. Use this calculator to safely increase your total distance each week. Generate a FREE training plan and download as .xlsx'

Learn More
Running Pace Calculator banner image.
Running Pace Calculator

How long will it take you to run a specified distance? Use this calculator to find out. Use either Km or Miles.

Learn More
Pete Pfitzinger Lactate Threshold Calculator banner image.
Pete Pfitzinger Lactate Threshold Calculator

Calculate your Lactate Threshold Pace according to the principles that Pete Pfitzinger outlines in his book: "Faster Road Racing"

Learn More
Running Race Time Predictor banner image.
Running Race Time Predictor

Predict how long it will take you to run a race based on an existing race time.

Learn More
Running Negative Splits Calculator banner image.
Running Negative Splits Calculator

The split calculator allows you to calculate what your lap (split) times should be for a given distance. You can also calculate negative or positive splits.

Learn More

What is Runnerscalc.com?

Runnerscalc.com is developed and created by Ross Griffin. The goal of Runnerscalc.com (Runners Calculator) is to be a Swiss-army knife suite of tools for runners that care about the nuances of running.

You don't have a calculator I need

Ah shucks! Sorry! You can recommend calculator ideas by submitting this form: Report a bug or request a new calculator