DBB Mountain Rockstar 2018 will be on April 15, 2018 at Mt. Batolusong , Tanay, Rizal. This is the last leg for the Grand Slam of the BTR Trail Running Series 2018. DBB Mountain Rockstar 2018 April 15, 2018 Rizal EVENT DISTANCES 1oK, 21K, 50K, 75K REGISTRATION FEE 1oK – Php 1,000 ...