The Cordoba section of this route –the 26 km from Valchillón to La Carlota– were restored in 2005 as a Nature Trail–Greenway. Since 2017, it has been maintained by Córdoba Provincial Council's Environment and Roads Office. Other sections, such as Écija and the rest of the province of Seville, are the responsibility of the corresponding town councils in relation to their maintenance.

The proposed greenway begins in Valchillón Station, a few kilometres from the capital city of Cordoba. It is easily reached via a road running alongside the Guadalquivir River, which begins in the Amargacena industrial estate. This remote station no longer receives trains linking Cordoba and the Mediterranean. It is now a peaceful place from which to contemplate, in the distance, the wooded banks of the Guadalquivir and the Guadajoz, as well as small planes taking off and landing at a nearby airstrip.

The climb up to Las Tablas

From Valchillón Station, the greenway heads south (km 0). It begins at the foot of the tall cereal silo, marked by the buffer stop at the end of the silo's tracks. Two kilometres further on, our greenway will jump across the Guadajoz River's usually low volume of water. The bridge is made of concrete and brick, like all of those along the route. Although all of these bridges are very simple engineering works, their striking aesthetics reflect good taste. The contemporary bridges date from the post-civil war period, when the original metallic ones were replaced. After the bridge, the route enters La Reina estate (2.5 km from Valchillón), featuring the route's first large bends through the hills. The railway thereby gradually gains sufficient height in order to leave the Guadalquivir Valley, gently climbing as it passes large embankments and trenches. In relation to these embankments, during the rainy season they form peculiar pools of water, due to the drains at their base being blocked. These mini reservoirs add a picturesque touch to our journey. This climb leads to the line's first and only tunnel, that of Las Tablas (km 6), which was used to grow mushrooms. This unfruitful experience was abandoned decades ago.

After the tunnel, we come to Las Tablas de Córdoba halt (km 7). A veteran shed, which occasionally provides accommodation for peaceful and restless chickens, marks the spot of that railway stopover, far from anywhere and stranded in a sea of farmland.

The viaducts of silence

Our route continues winding up through the hills and watercourses, surrounding by cereal-growing countryside, which is especially attractive in spring. Daring, stylised bridges were laid down to overcome the steeper watercourses, most of which have survived almost intact.

The first of the bridges crosses the Temple stream; this construction has a curious well attached to one of its pillars. After crossing the bridge, from the trail we can see, in the distance on the right, the unmistakable silhouette of Almodóvar del Río Castle, under whose centuries-old stones dozens of AVE (high-speed) trains pass daily, on their way to Seville, Cordoba or Madrid.

After passing by La Cabaña hill, another bridge crosses the watercourse of La Torvisca stream. This construction announces the arrival of the station of Guadalcázar (km 16), a village that, nonetheless, can be reached more quickly from the bridge itself, following several country lanes that pass under the bridge. All that is left of this station (km 13) is the lot, which has been turned into a park, and a solitary well as a sign of better times. It is now a rest area with a picnic site, fountains, car park and children's playground. A piece of track is exhibited as if it were a sculpture, as a reminder of the railway. 

Towards the top of the greenway

The route continues westwards, and begins to descend on entering the watercourse of La Marota stream. There, a discrete bridge crosses over the reedy streambed. From this bridge, the route begins going around a pine forest that makes up the park of El Hecho (km 18). This park, where Guadalcázar holds its San Isidro fiesta, is equipped with a barbecue area and plenty of shade, which is well received and enjoyed since these spots are exposed to the unforgiving Andalusian sunshine.

After this resting place, the greenway enters a section that passes by a curious reservoir containing (when it is not empty) the water flowing from the Escorial stream. What makes this construction curious is the fact that it uses the railway embankment as a dam, after raising it a little, sealing its culvert and creating a simple overflow.

At a distance of 300 m from the reservoir, several rustic stone benches are all that remain of the discrete halt of Las Pinedas. The new village that it catered to (located at km 20 on the greenway) is a few metres from the route. However, as one of our railway's peculiarities, the halt was located almost a kilometre from the village. It has now been turned into another recreational area.

There is a drinking fountain in the village beside the greenway. Stopping here is a must in order to face the long, straight stretches that, after crossing the Guadalmazán stream, will take us as far as the station de La Carlota (km 26). This locality is actually 6 km from the station, while the village located beside the greenway is called Fuencubierta. Also, identifying the station is almost a challenge for industrial archaeologists, since all that is left of it is the foreman's house, and a small store attached to it. From here, the greenway continues towards the province of Seville, which it reaches in just under 2 km. A river with a curious name (El Garabato) marks the provincial dividing line.

From here to the town of Marchena marks the second stage of the Campiña Greenway, passing through Écija (km 46), Villanueva del Rey (km 55), La Luisiana, located at km 62, Fuentes de Andalucía (km 74) and, finally, Marchena and its silo at km 91.