Frog Rock MTB challenges cyclists to spin wheels on private hill country Press release, Waikari School Fundraising Committee, 9 September, 2013: Registrations are open for the 5th annual Frog Rock mountain bike challenge on Saturday 9 November, 2013. Private landowners in the beautiful limestone hills of North Canterbury will again reopen their roads and tracks … Continue reading Frog Rock MTB challenges cyclists to spin wheels