The Hardest Marathons in the US! Are You Tough Enough for These Extreme Races?

The Hardest Marathons in the US! Are You Tough Enough for These Extreme Races?

Marathons have been around for hundreds of years, although the length has varied over time we now have a standardized length of 26.2 miles, which we can all admit is tough. However, some don’t feel this challenge is ENOUGH. That’s why there are even more brutal and more challenging tests of human capacity. What makes…