you be surprised how far you can push the so called sprint bird too most so called sprint birds when pushed that bit further can handle most distances if there good there good if there bad there bad soontjens van reets jannsens cooremans etc do it all the time 2 year ago a top sprint man in belg moved up to middle distance flying against all the big boys finished second overall in his championship leo hermans another the list done it few year back Geerinckx another with his soontens is a one of the top middle distance men in all of belguim with his soontjens the list goes on and on really