i bet you will find owen birds that done well at the shorter races will do well at longer distances just be careful though as sometimes they dont take to well to sprinting after being pushed further than 350 mile my advice would be when they get a little older send them on further as once they hit 3 years of age i reckon most start to slow a little so these are ones i push further as there career most of the time is over but being pushed on you can get another year or two out of a good bird no problems at all i would bet if you did push your birds that are bred for sprinting further they will more than give the birds that you may have bought in for middle distance a run for there money