Marathon Calculator

Push Your Limits

Whether you’re training for your first 5K or aiming for a marathon personal best, our free tools are here to keep you focused, confident, and moving toward your goals. Built on more than 40 years of running passion, this site is all about helping you believe in yourself, stay consistent, and cross every finish line with pride.

We’d love your feedback as we continue improving the calculator and creating tools that motivate runners everywhere. 

  • Marathon Calculator Reviews
    When it comes to planning your marathon, having the right tools can make all the difference. While we’re excited about what MarathonCalculator.com is shaping up to be, we also want to celebrate some of the amazing calculators out there that runners have relied on for years and our brief marathon… Read more: Marathon Calculator Reviews
  • Let’s Make This Great
    At MarathonCalculator.com, we’re committed to providing the best possible tools for runners to set and achieve their marathon goals. But we know that no tool is perfect from the start, and that’s where we need your help. Why Your Feedback Matters This website has always been about more than just… Read more

Old-School Motivation, Right on the Box

Sometimes inspiration doesn’t come from an app or a fancy new gadget and comes from something as simple as the back of a shoebox. I recently got a new pair of running shoes and noticed something I haven’t seen in decades: a printed pace chart and a spot to write in...

Marathon Calculator Reviews

When it comes to planning your marathon, having the right tools can make all the difference. While we’re excited about what MarathonCalculator.com is shaping up to be, we also want to celebrate some of the amazing calculators out there that runners have relied on for...