Australia’s Fastest Road Running Race? This is record setting territory. They're closing down the full Grand Prix circuit. Getting the traffic islands removed for the day, and racing on smooth flat bitumen. Loop course. No hairpin turns. No off-roading. No gravel. No grass. No compromises. Half Marathon, 10km and 5km. All AIMS certified measurement too. So no wondering if you really ran a record. No flaky GPS measurements. And to encourage that speed, there's a 10k Prix Race on the track first with $12,000- worth of prize money.