San Antonio, Zambales, is home to three mountains and five trails.
Mt. Balingkilat is considered to be the highest with an elevation of 1,100 meters above sea level and consists of two trails which are ideal for hikers looking for moderate to challenging hikes.
If you are looking for a mild hike, there is one mountain to choose from, which is Mt. Pundaquit (Anawangin).
There is also Mt. Cinco Picos which is a good option for hikers searching for mild to average hikes.