Did you know that the first person to run a marathon was actually a Greek messenger named Pheidippides? According to legend, he ran from the city of Marathon to Athens, a distance of approximately 42.16KM, to deliver news of the Greek victory over the Persians. The funny part? After completing his historic run, he shouted, "Rejoice, we conquer!" and then promptly collapsed and died from exhaustion. While marathons today are much more organized and safe, it's a reminder that running 42.16KM is no easy feat!