There are no internal flights within Liberia.
Bush Taxi & Bus
Bush taxis go daily from Monrovia to most destinations, including Buchanan, Gbarnga, Ganta, Sanniquellie and the Sierra Leone border, although distant routes are severely restricted during the rainy season. Minivans (called 'buses') also ply most major routes, although they're more crowded and dangerous than bush taxis.
Car & Motorcycle
Vehicle rental can be arranged through better hotels from about US$130 per day plus petrol for a 4WD. You can travel by private taxi in Monrovia for US$5 to US$7 per short hop; contact the well-run and trusted network of Guinean taxi drivers, Alpha, for more information, including on airport pick-ups. Motorbike taxis known as pen-pens ply the streets of Monrovia and other cities. In the capital they have a 10pm curfew for a reason; ride with caution.
Bicycles are a handy way to get around in Liberia if you can manage the terrible roads. Also, most bicycles are in bad shape, so check the brakes before you rent one. In Monrovia, riding a bicycle is akin to walking on a tightrope – cycle at your own peril.
There is no passenger ferry service within Liberia, but you will find many unofficial canoes and boats providing transport on various waterways in the country.
There is no train service in Liberia.