I use to chase down super when I was a kid. Had extra roos out lose in the yard. You had to be in shape, quick, and be able to turn on a dime! It wasn't easy, but I did several times. Wish I could move half as well now as I did than! But my dad always laughed watching me chase them down, ah the good old days.trust me, that roo can outrun even the best human! Do not ever run after or chase chicken to catch them, as you will find it is impossible. They are a prey animal and if you act like a predator they will do anything they can to get away from you and they are good at it.
Best ways to catch them are to lure them with food and move slowly. Try using some old fencing and make a triangle that is open on the flat end and ends in a cage or kennel in the pointy end. Lure him into the funnel with food and walk slowly behind him until he goes into the kennel. If the kennel is large enough he will go in and especially if there is no other place to go.