Trail runners will find plenty of options in the mountainous area east and north of Puerto Vallarta. There are numerous hiking areas that feature hilly trails of moderate to major challenge. Some areas are more wooded, with dense jungle vegetation, while others are more exposed & open. Hiking apps such as AllTrails and Trailforks are good resources for more information.
Medio Mirador de Mojoneras, located close to Puerto Vallarta, is a popular hiking area. This is a great area to do some hilly running on a wide dirt path with good footing. Just east of the Vista Vallarta Club de Golf Club, follow the El Mirador-Rancho las Vegas road for as many km as you like!
North of Puerto Vallarta, there’s good trail running in the hills above Punta Mita in the Vista Bahia Cabañas hiking area.
North of Higuera Blanca, Monkey Mountain (Cerro del mono) is a popular hiking area. It’s a 7 mile out and back hike through dense vegetation, with a gain of 31.