The Dénia Greenway is located at the southern end of the extinct Carcaixent-Dénia railway line, a pioneering railway of Spain’s narrow-gauge network, which was in operation for 90 years.

The first section, from Carcaixent-Gandía, dates from 1864 and began to operate as a tram with animal traction along its 35 km of tracks, with the peculiar width of 1380 mm. It was the company "Tram-vía de Carcagente a Gandía y Denia" that inaugurated it. But in 1882 it was included among the assets of the Almansa to Valencia and Tarragona Railway (later, in 1891, the North Railway network). Under this company it was extended to Dénia, then as a conventional steam traction railway, changing its gauge to the more usual one metre.

With a marked agricultural vocation, this train’s main commercial objective was transporting citrus fruits from Valencia’s orchards to the port of Dénia, and also to the rest of Spain from its link in Carcaixent with the general network. The nationalisation of its parent company, Compañía del Norte, within Renfe in 1941, meant that it ended up in another public entity, "Explotación de FFCC por el Estado," which later, in 1964, would be reformed to make way for FEVE.  

In 1969 the sections from Carcaixent to Tavernes and from Gandía to Dénia were closed, as part of a plan to bring Renfe Iberian-gauge commuter to Dénia from Cullera, building a new section from that station to Tavernes, and widening the rest of the track to receive Renfe trains. The new trains arrived in 1972 as far as Gandía, but there the construction stopped. This final section to Dénia remained in service for a couple of more years, until 1974, in the hope that its route would serve the extension of commuter trains to Dénia. But the project was never carried out. 

The old Dénia train station is the most outstanding building of the entire railway line, located a few meters from the terminal of the Trenet de la Marina, belonging to FGV, the metric-gauge line with which it connected and that reaches the capital of Alicante. It houses the Toy Museum as a tribute to the toy-making tradition in this town that came to have numerous factories in the 20th century. It also has an exhibition hall.

This old railway has other restored sections such as the Safor Greenway, south of Gandía, and new sections between Carcaixent and Tavernes de la Valldigna under the name of the L'Antic Trenet Greenway.