Ourimbah Rollercoaster The final round of the Rollercoaster series was brought back to Ourimbah. I went up there and covered it for Rocky Trail Entertainment. Here’s a few of my selected favourites. Related posts: Shimano GP: Round 3, Ourimbah Rollercoaster and Downhill State Champs 2014 Mountain Biking at Ourimbah and Oxford Falls Shimano GP Round 4 – James Estate Red Ass State Champs – Ourimbah