Thousands of Harley-Davidson riders from across New Zealand are gearing up for one of biggest motorcycle events on the calendar as the 2015 Iron Run converges on Queenstown from 20 - 21 March. Marking 25 years of the Harley Owners Group in New Zealand, throngs of Harley-Davidson enthusiasts are riding in unison from Auckland, Hamilton, Palmerston North, Wellington, Christchurch and Dunedin - winding through the country's world-renowned rolling mountains - before the convening in Queenstown this weekend.