

That makes shorter races easy round numbers and in fact continues once you get in ultra races and running off road as well. Most races started on an international stage and the most common unit of measurement around the world is the metric system, which is to say kilometers. Why are some races in kilometers and others in miles?

In fact, let’s break each of these down not only in miles, but in how long they could take to run. It’s important not to jump your mileage too quickly, so while you might get inspired watching some of the big marathons, remember they did A LOT of training to build up a body strong enough to withstand hours of running. Let’s put these in to perspective and breakdown the kilometers in to miles for those of us who don’t often use the metric system ( cough, just the United States). Whether you’ve just started running or you’re looking for a new challenge, you might be wondering just how far certain races really are and what’s a good time.
