1.
From Petchabun, take Route 21 to Lom Sak intersection then Route 203 past Lom Sak district towards Lom Kao district, about 17 kilometers. Turn left to Route 2011 and 2331. You will reach a toll booth for the national park (Phu Hin Rong Kla). Turn right at the junction and continue 6 more kilometers.
2.
Coming from Pitsanulok province, it is a 24 kilometer drive through the national park (Phu Hin Rong Kla) starting at the park office.