4.6
(107)
4,934
riders
15
rides
Road cycling routes around La Unión traverse a diverse landscape, characterized by its proximity to the Mediterranean coast and the historic Sierra Minera. The region features coastal roads offering views of the Mar Menor, alongside routes that explore salt flats and gently rolling hills. Elevations are generally moderate, with some routes incorporating more challenging climbs through the mining hills.
Last updated: July 5, 2026
5.0
(4)
399
riders
91.6km
04:22
1,020m
1,020m
Hard road ride. Very good fitness required. Some segments of this route may be unpaved and difficult to ride.
5.0
(2)
115
riders
84.3km
03:49
410m
410m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

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41
riders
112km
04:49
730m
730m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
19
riders
49.8km
01:59
200m
200m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
16
riders
34.4km
01:30
150m
150m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
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I've ridden both sides several times and thoroughly enjoyed it. Ideal for gentle climbing and beautiful scenery. Highly recommended.
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According to Parliamentary Question E-2325/2003 to the European Parliament, millions of tons of waste were dumped in Portman Bay between 1959 and 1989. It is estimated that approximately 13 million cubic meters of mud are flooding this bay, causing the 1957 shoreline to shift approximately 300 meters inland. This waste contains sulfides, arsenic, cadmium, copper, mercury, lead, and zinc, as the experts consulted acknowledge. One of Europe's greatest environmental disasters, so it's not a "highlight," but it's still a beautiful cycling route...
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Beautiful route along the saltwater lagoon
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Cartagena has about 220,000 inhabitants and is one of the most important commercial ports in Spain and the largest naval base in the Mediterranean.
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Fabulous scenery all the way along this route
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There are over 15 road cycling routes around La Unión, offering a diverse range of experiences from coastal rides to routes through mining hills and salt flats.
Yes, La Unión offers several easy road cycling routes. For instance, the Blick auf das Mar Menor – The Mar Menor loop from La Esperanza is an easy 21.3-mile (34.3 km) path, perfect for a relaxed ride with scenic views of the Mar Menor.
For experienced cyclists seeking a challenge, the Portmán Coastal Road – Blick auf das Mar Menor loop from Sierra Minera is a difficult 57.4-mile (92.4 km) route featuring significant elevation gain along the coast. Another option is the Marchamalo Salt Flats – Puente de la Risa loop from La Unión Vieja, a moderate 52.4-mile (84.3 km) path with varied terrain.
Road cycling routes in La Unión offer a mix of coastal roads with views of the Mar Menor, routes through historic mining hills, and paths that traverse salt flats. You'll experience diverse landscapes characteristic of the region's proximity to the Mediterranean and the Sierra Minera.
Many of the road cycling routes in La Unión are loops, allowing you to start and end at the same point. Examples include the Camachos – Cabezo Ventura loop from La Unión Vieja and the Puerto de Atamaría – Portmán Coastal Road loop from Portmán.
Given its Mediterranean climate, La Unión is generally suitable for road cycling for much of the year. Spring and autumn offer pleasant temperatures, while winter can be mild. Summers can be hot, so early morning or late afternoon rides are recommended during peak season.
The road cycling routes in La Unión are highly rated by the komoot community, with an average score of 4.5 stars from over 50 reviews. Cyclists often praise the varied terrain, from coastal views to the unique landscapes of the salt flats and mining hills.
While cycling, you might encounter historical and natural points of interest. Notable attractions in the wider area include the Cartagena Town Hall, the La Chapa Battery and Portmán Lighthouse, and the Calblanque, Monte de las Cenizas and Peña del Águila Regional Park.
Yes, routes that hug the coast, such as sections of the Portmán Coastal Road – Blick auf das Mar Menor loop from Sierra Minera, provide stunning views of the Mediterranean and the Mar Menor. The mining hills also offer elevated perspectives of the surrounding landscape.
The routes around La Unión cater to various skill levels. Out of 15 routes, 4 are considered easy, 9 are moderate, and 2 are difficult. This means there are plenty of options whether you're looking for a relaxed ride or a more strenuous challenge.
Yes, some routes venture into the Sierra Minera, offering a glimpse into the region's mining heritage. The Camachos – Cabezo Ventura loop from La Unión Vieja, for example, leads through the hills of Cabezo Ventura, which are part of this historic landscape.


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