“Roman legions completed more than one-and-a-half marathons a day carrying more than half their body weight in equipment.”
Wow. And whats the length of a marathon? 20 miles?
http://www.historyonthenet.com/Romans/roman_army.htm
Your average Roman soldier wouldn’t last a day up against a US Marine.
I once had the opportunity to observe a US Army Ranger class being tested to determine which of them would graduate and earn their ranger tab & beret.
The Roman legions had nothing on any of those guys.
26 miles, but the legions didn’t run them, they walked. Our soldiers today carry a lot of weight and can cover that much distance in a day also(would be about 39 miles).