DAVAO CITY: The dynamic duo of veteran adventure racer Dexter Nonato and triathlete Juanito Mahinay of Team Tri-Buddies Tagum clocked 12 hours, 56 minutes and 48 seconds to rule this year’s Mt. Apo Boulder Challenge held in Sta. Cruz, Davao del Sur. Team Wals composed of bikers Jayrald Daraydo and Ireezbone Barrientos, who took the early lead in the mountain biking event settled for second place at 13:36:34. At far third was the tandem of Romeo Mascardo Jr. and Dioscoro Genunsalao Jr. at 14:03:20.