The Esk River is located within the Iluka precinct of Bundjalung National Park on the north coast of New South Wales, and is described as the longest unspoilt natural coastal river system on the NSW north coast. The river has achieved official wilderness recognition, placing it among only three coastal locations in NSW to receive that designation, and portions of the surrounding area are on the World Heritage list.

The standard put-in point is at Bill Weiley Bridge, reached by following Iluka Road approximately 8 kilometres from the Pacific Highway. Parking is available near the bridge. The recommended route heads upstream from the bridge, covering approximately 19 kilometres return with an estimated paddling time of around four hours. The sheltered inland waterways make this a suitable route for canoes and kayaks exploring the southern section of Bundjalung National Park.

Paddling upstream from the bridge, the river passes through mangroves, heathland, and old-growth dry sclerophyll forest, with distinctive rock formations visible along the way. Downstream, closer to the Clarence River entrance, pied oystercatchers and eastern whipbirds are commonly sighted. Koalas are occasionally spotted in tallowwood and swamp mahogany trees along the banks. The area is considered prime birdwatching territory. Fishing is a permitted activity, though a current NSW recreational fishing licence is required.

The best time to visit is between August and October. A park entry fee of $8 per vehicle per day applies. Pets and domestic animals are not permitted within the national park, with the exception of certified assistance animals. Smoking is prohibited throughout NSW national parks.

Mobile phone reception is limited within the park. Paddlers are advised to download the Emergency Plus app before visiting, as it uses GPS to assist emergency services in locating users. In an emergency, dial Triple Zero (000). The park is generally open year-round but may close temporarily due to poor weather or fire danger.