He also hopes to make the calculator adjust paces according to age and experience. “It’s one thing to say, I want to run the Boston Marathon, I have to improve my time by 20 minutes ...

Technology Running Calculators Are Inaccurate and Misleading We need your help to build a better one. By Christie Aschwanden April 24, 201410:47 AM ...

Running puts extra caloric demand on your body. When used safely, this tool can help fine-tune your fueling. by The Runner’s World Editors Updated: Nov 08, 2022 2:18 PM EST Chris Hinkle ...

Running after riding a bike is much different from running on fresh legs. Learn about the physiology of running vs. triathlon running, plus how to estimate your triathlon run time.

The first calculator, created by coach Craig Godwin of FasterRunning.com, spits out a time of 2:56:05. Greg McMillan’s namesake calculator predicts 2:55:23.

At 80 degrees, you will be running approximately 18 seconds slower. The calculator was originally designed for those training for the many races and marathons that take place in the fall.

McMillan developed his calculator in the mid-1990s while he was in grad school at the University of South Carolina studying the correlation between blood lactate levels and running performance.