You can also take the express boat from Kuala Baram (three hours) to Marudi. From Marudi, take a commercial express boat to Kuala Apoh or Long Panai on the Tutoh River (a tributary of the Baram River). The express departs Marudi at noon daily and returns to Marudi in the early morning of the next day. The trip takes about three hours.
Malaysia Airlines (Maswings) operates three daily flights from Miri into Mulu (30 minute flight).