Originally Posted by TerminatorX5

i have driven the PanAmerican highway between Panama City and Managua. The road is OK, a few potholes in Panama (those are deadly, since the road in Panama generally much better than in Costa Rica, you drive faster, and a pothole gets your tires in a second. Ask me how I know)...
the road in CR is very treachorous, especially in Cierra de la Muerte, where you climb up to 10000 ft, drive in a permanent fog (which never dissipatates), and you really run a risk falling off the mountain. crossing border at Paso Canoas on the Panamian side is cool, but on the CR side, the´ll get you for binging into the country anything (they tried it with me, but I have a dip plates and dip passport, so they HAD to let me go). Pena Blancas on the Nicaraguan border is OK, and again, you´ll need to look out for correct papers on the CR side, otherwise, they´ll turn you back. They tried it twice with me, but again, my status helped me - and all my papers were good anyways...

I have not tried the PanAmerican highway at any other places... I was told, that once it reaches the south border of Panama, there is nothing going to Colombia - but I have not been that far south...

Oh, in Panama, there is a stretch between David and Panama City, where you WILL need to make sure you have a full tank of gas, as for several hours there will be NO gas stations...

Good luck on your adventures...