In San Isidro follow the Interamericana towards the South (Panama). Turn left direction Rivas, just after the supermarket Maxi Pali.
Stay on this road for about 11 kms, until the village of Rivas.
In Rivas, take the second road on your right after the Church. There is a sign for the Parque Nacional Chirripó.
After a little more than 4 km you will arrive in Chimirol. After the school, which is on your right, take the second road on your right, direction La Pardita. There is a bus stop at the corner on the same side (on your right) And it is the end of the paved road. Please be careful to take the second road and not the first one which has also a bus stop BUT on the left side.
You will cross a concrete bridge over the river Chirripó. After this bridge drive 500 m and turn left direction Acueducto Chimirol. This the first way on your left.
2 km more of climbing and you will get to La Cima del Mundo which is at the end of the road.