Bikes of every size and shape , from an adventure scooter through hard-core KTM dirt-bikes to BMW ’ s leviathan 1250GS models , dozens of riders converged on Riverhead Forest just north of Auckland for the Kiwi Rider 350 . After a trying couple of years , where motorcycling events have been scheduled , cancelled and rescheduled ... only to be cancelled once more , the Kiwi Rider 350 brought some much needed riding relief to the gravel riding community on Saturday March 19 . Riders arrived at the Old Forestry HQ to be