Dati when we travelled that route, one major intersection lang sa Quezon, Bukidnon that you should be alert of, the one going to Cotabato if you straight, and the one going to Davao if you turn left. this intersection is around 3-1/2 hrs from CDO, the rest of the road is easy. you'll pass by valencia, maramag and quezon.
thanks for the heads-up on the maramag junction, admiral88. have seen on google earth that junction. 'yung mga towns na lang after quezon ang di ko ma-identify kung saan dadaan...