Las Terrenas is small enough to walk, especially along the beach where the sand is firm. The town stretches along the coast rather than inland, so most of what you need is within a 20-minute stroll.
For anything beyond walking distance, motoconchos are the default. These motorcycle taxis are everywhere — flag one down and negotiate a fare of 50–100 pesos for a ride within town. They are loud, smoky (many run two-stroke engines), and ubiquitous. You get used to them. A 24-hour taxi stand sits on the beach road between the village centre and Playa Las Ballenas, offering a more comfortable alternative.
You can rent scooters, quads, and cars from several places in town. Cash usually gets a better deal than credit cards. Insurance is typically included, but read the contract carefully — you are responsible for damage. Driving in town is not difficult if you are comfortable with informal traffic rules and the occasional dog in the road.
For trips outside Las Terrenas, gua-guas (shared minibuses) run regular routes to Samaná and beyond. They range from minivans to converted school buses and are far cheaper than taxis. Caribe Tours operates scheduled bus service from Samaná to the rest of the country.