You should know that bus journeys can be relatively long depending on the cities you want to link together.
Know that depending on the distance you want to cover, it is not uncommon to have to change the bus one or more times. By choosing this means of transport, for long journeys you may need to complete the journey over several days.
You should often pass through San Jose to cross the country, it is really a central point with regard to the bus network.
On the way, the buses often have several stops, so you will undoubtedly put more time than by car by choosing this means of transport.
To give you an idea the duration of a trip you want to make, meeting on this site to calculate your route. Do not hesitate to use this site to help you prepare your itinerary. However, be aware that the hours are not always good, it is therefore necessary to better inform yourself on the spot rather than relying only on this site.