Ive a coursing type x lurcher and id say hes a pretty quick killer run alot of small type land with him. Ive seen him have a just over 4 minute run i know how long it was as i started filming he was carrying an injury to his wrist and lacked a yard on the hare but done enough to keep on it this was on a couple grass paddocks and killed it eventually by wearing it down. Having a couple minutes in the tank and hanging in there is alot different to over running stuff in my opinion.