The Society launched the HPS 100 Mile Centenary Challenge on May 27th 2023 to coincide with the Centenary Ride at Balmoral.   Whether it’s in-hand, ridden, long-reining or driving all mileage counts towards the 100-mile challenge.   You can take part on your own or in a team of up to three ponies and riders (or one rider with more than one pony). The cost is £10 per pony & rider combination or £25 per team and is open to all members with their pure or part-bred Highland Ponies and rRegistration for the 100 Mile Centenary Challenge is via the Society's Online Shop - so if you haven't already signed…