Dalmatian, hands down! Border Collies are sprinters, they like to do short bursts of speed and then trotting instead of one consistent speed. (I'm sure they could handle going at one speed, but it's not what they're best at and not what they're bred for, like Dals.)
Jack Russells can go forever, and Huskies can too. Greyhounds tend to prefer flat-out running (ie: human could never keep up) to walking and trotting but I bet they could handle it easily, too.)