Cuerda Larga Traverse 2026: route, price and schedule

Plan your race pace

The Cuerda Larga Cross once again marks the Madrid trail calendar with a very recognizable formula: 26 kilometers, 1,500 meters of positive elevation gain, and a line of summits that forces you to read the mountain rather than chase paces. The race takes place on Sunday, May 31, 2026, starting in Miraflores de la Sierra and finishing at the Puerto de Navacerrada, along a granite ridge that combines altitude, continuity, and open scenery.

The race is part of the Copa de Hierro and retains that classic traversal feel that sets it apart from other more explosive events. It is neither a short uphill nor an asphalt marathon transplanted into the mountains: here, exposure to the sun, high-altitude wind, terrain changes, and effort management on a mountain course that rarely offers relief all matter. The result is an alpine endurance test in the heart of Guadarrama, with 400 spots, entry around 20 euros, and a mandatory FEDME license.

A historic traverse that is still alive in the Sierra de Guadarrama

Tradition carries weight in this race, and not just because of the age of the route. The Cross de Cuerda Larga was born in 1988 under the leadership of RSEA Peñalara, coinciding with the entity’s 75th anniversary, and since then it has become one of the most recognizable events in Madrid mountain running. Its place within the Copa de Hierro circuit also gives it a very specific competitive meaning: it is not just about finishing, but doing so within a sporting narrative that connects several mythical races in the mountains.

That historical component explains much of its prestige. While other races reinvent themselves every season, Cuerda Larga maintains an almost ritual ascension identity. Those who run it move among names that are already part of Madrid trail vocabulary: Bailanderos, Asómate de Hoyos, Cabeza de Hierro Mayor, or Guarramillas. Each summit adds meters, but also memory; each step along the ridge recalls why this route is considered one of the most emblematic in the Sierra de Guadarrama.

In 2026, the organizers are repeating the event in spring, a decision aimed at milder conditions than those of editions held in autumn. This is no small detail. At these elevations, May can bring mild mornings, generous hours of sunshine, and a strong contrast between the valley and the high mountains. The runner encounters a living, changing mountain, where the weather can turn in a matter of minutes and where it is wise to watch both the sky and the clock.

The course: 26 kilometers along the best-known ridge in the mountains

The route connects Miraflores de la Sierra with Puerto de Navacerrada following Cuerda Larga, one of Guadarrama’s most famous traverses. The start is in the village, and the first major move of the day is the climb toward Puerto de la Morcuera, before entering a succession of summits and passes that turn the race into a kind of mountain cord linked by trail and rock. The average altitude is above 2,000 meters, and the highest point is Cabeza de Hierro Mayor, at 2,383 meters.

The sequence of passes sums up the race’s character quite well: Loma de Bailanderos, Asómate de Hoyos, Cabeza de Hierro Mayor, Cerro de Valdemartín, and Alto de Guarramillas before the final descent. The route does not have major technical secrets for a runner accustomed to the mountains, but it does require mental consistency. There are hardly any hiding places: the ridge is usually exposed, the terrain is granite, the slopes force a mix of running stride and occasional hand support, and the wind can become another rival.

The most striking thing about this route is its apparent contradiction. On the one hand, the race is considered quite runnable for its elevation gain and altitude; on the other, it strings together efforts that punish the legs with a cadence very different from a forest trail. Climbs and descents follow one another without pause, as if the mountain were forcing you to negotiate every section. It is not a highly technical event, but it does demand a fine reading of the terrain, movement economy, and a cool head when fatigue starts to sharpen every foot placement.

The details that really matter before you take the start

The practical information is clear: the 2026 edition takes place on May 31, with a start at 9:00 from Miraflores de la Sierra and a finish at Puerto de Navacerrada. The official distance is 26 kilometers, with 1,500 meters of positive elevation gain, in mountain format and advanced level. The time limit is 6 hours, a benchmark that helps you understand the real toughness of the route without exaggeration or shortcuts.

The observed entry fee is set at 20 euros, although the race keeps one condition that restricts participation: it is mandatory to be mountain-federated with a valid FEDME license. In addition, there is a bib limit, set at 400 runners, a figure consistent with the capacity of the area and with the philosophy of a traverse that prioritizes respect for the park and the mountain itself. The entry includes insurance, refreshment stations, and a return bus, an important detail since this is a point-to-point race.

The finish in Navacerrada also means the day must be planned with some logistics in mind. It is not enough to just get to Miraflores; you have to plan your return from the end of the race. That return bus is not a minor add-on, but a central part of the setup. The race may seem straightforward on paper, but its structure requires the same precision in organization as in gear selection or hydration planning.

What weather is usually expected in May and why it affects the race so much

May in the mountains is not a neutral month. Historical data used by the organizers place typical temperatures between 11 and 22 degrees Celsius, with an average of around 16 degrees, a 33% chance of rain, around 1.7 mm of average precipitation, and about 13 hours of sunshine per day. These figures suggest an apparently friendly race, but with very relevant nuances at altitude.

The key is altitude and exposure. As soon as the runner gains the ridge, the thermal sensation can change quickly. A mild dawn in Miraflores can turn into a cool, windy day above 2,000 meters, and solar radiation intensifies over rock and open sky. In those conditions, a windbreaker stops being an accessory and becomes a sensible safety item, especially if the forecast calls for cloud cover or a sudden weather change.

The weather affects more than clothing. It also shapes pacing, hydration, and emotional wear. A stable day makes the ridge’s exposure easier to handle; a day with wind or humidity adds uncertainty to footing and body temperature. That is why spring races in Guadarrama have a particular beauty: they seem close and benign, yet they preserve the high-mountain character that demands respect and margin.

Mandatory gear and equipment that makes sense in the mountains

The rules point to two basic items: a charged mobile phone, with enough battery and emergency numbers saved, and a windbreaker or rain jacket, which may be required depending on the weather. In a race over an open ridge lasting several hours, this minimum already gives you an idea of the context: this is not a recreational outing, but a traverse where personal safety and prevention really matter.

Beyond that requirement, common sense suggests trail shoes with good grip, because the terrain combines rock, gravel, and high-mountain trail. A lightweight hydration vest or a small pack also fits well on a 26-kilometer route with aid stations, especially if the runner prefers to carry gels, some food, or an extra layer for the final descent. On a day like this, every gram matters, but it matters even more not to come up short when the weather turns.

Sun protection deserves a special mention. The exposed ridge, the month of May, and the daylight hours make a cap, visor, and sunscreen obvious allies. They are not comfort accessories, but tools against accumulated wear. The sun at altitude is not as gentle as on a valley stroll; it hits with a clean, almost metallic light that is felt on the neck and face as soon as the race stretches out.

Miraflores de la Sierra: a classic start in the northern mountains of Madrid

Miraflores de la Sierra acts as a natural gateway to this part of Guadarrama. About 50 kilometers from Madrid and at an altitude of around 1,150 meters, the town offers that balance of accessibility and mountain atmosphere that suits trail races so well. Its role in the event is not merely logistical: the village sets the tone for the start, with streets, the main square, and a mountain-weekend atmosphere before the race dissolves toward Morcuera.

The location also influences the runner’s experience. The northern mountains of Madrid in May usually have green meadows, crisp light, and traces of snow on the highest summits if the winter has been generous. That contrast between the gentleness of the urban surroundings and the hardness of the ridge gives the day a dual reading: at first it seems like a close, almost home-like race; later, once the path gains altitude, the mountain appears in its more serious form.

It is worth remembering that the finish is in Navacerrada, not at the same point as the start. That turns the race into a kind of linear journey, as if the runner were crossing a mountain cord stretched between two very recognizable places. That point-to-point condition gives it its own personality and requires more orderly planning for the day, from transportation to return. Nothing is entirely improvised when the finish is far from the car, the lodging, or the start of the day.

The Copa de Hierro and the place this race holds within the circuit

The Cross de Cuerda Larga is the second event in the Copa de Hierro, a circuit of five mountain races in the Sierra de Guadarrama. To qualify for the trophy and standings within that cup, runners must complete at least four of the five races, a format that reinforces the value of consistency over isolated results. The circuit has established a distinct mountain culture, very Madrid in the best sense: demanding, classic, and closely tied to the territory.

Within that framework, Cuerda Larga occupies a strategic position. Its route sums up much of what makes Guadarrama trail unique: sustained altitude, granite terrain, exposed ridges, and scenery that changes quickly between the crest and the valley. It is not the longest race in the circuit nor the toughest in elevation gain, but it is one of the most iconic because of the continuity of its route and the purity of its line.

The Copa de Hierro has something of a living archive of Madrid mountaineering. Its races are understood not only as competitions, but as different ways of reading the mountains. On that map, Cuerda Larga acts as a high-style line between summits, a traverse that preserves the flavor of classic routes while demanding the same respect as any modern mountain race.

Time limit, pacing, and the trap of thinking it is a runnable race

Six hours for 26 kilometers may seem generous at first glance, but the mountain always introduces its own arithmetic. The positive elevation gain, average altitude, changes in grade, and accumulated fatigue make the clock feel different. In a race like this, the runner is not only fighting the raw time, but also the efficiency with which each climb and descent is managed.

The “runnable race” label is partly true, but it should be read carefully. The terrain usually does not present major technical difficulties, and that allows for a relatively fluid stride in some sections. However, the succession of rises and drops, together with rock and exposure to the elements, gradually empties the legs with a quiet logic. It is a fatigue that does not always announce itself suddenly; it arrives like mist quietly creeping into the pass.

Those who arrive with road pace often pay the price. Cuerda Larga rewards something else: patience, adaptation, and terrain reading. The race is built for runners with mountain experience, not necessarily specialists in extreme technicality, but for those who know that a long ridge can be more demanding than a steep climb. The wear is cooked slowly, and by the time the final descent appears, the reserves have already been tested.

Why this race still appeals to mountain runners

Its value is not only in the profile. It also lies in the feeling of running a historic line along one of the best-known ridges in central Spain. Many races offer elevation gain; not so many allow you to follow such a recognizable ridge, with the horizon open on both sides and summits that are part of Madrid mountaineering’s collective imagination. In that combination of landscape, history, and effort lies much of its magnetism.

In addition, the Cross de Cuerda Larga keeps a human scale. It is neither a mass event nor a huge marathon with thousands of participants. The 400 bibs limit the size of the field and give the experience an almost artisanal feel. This affects movement on the trails, coexistence with the environment, and the sense of being in a race that still resembles a club traverse, even though it is fully established on the trail calendar.

The balance between toughness and beauty explains its lasting appeal. In times when many events seek more and more spectacle, Cuerda Larga continues to bet on sobriety: mountains, mid-distance, serious elevation, and a historical setting that needs no embellishment. It is a race that stands on its own, like those ridges that do not need to make noise to command respect.

A race that measures much more than your legs

The Cross de Cuerda Larga demands fitness, but also judgment. It asks you to know what you are carrying, to understand how the mountain changes in May, to accept the altitude, and not to underestimate a route that, because it is not extremely technical, could mislead less experienced ridge racers. Its best reading is as a traverse with a competitive soul, an event that becomes more enjoyable the more you understand its logic.

The combination of date, course, moderate price, limited spots, and federation requirement creates a very clear picture: this is not a race to improvise, but one of those days when every detail matters, from the windbreaker to the return bus. And perhaps that is why it remains so strong. On an increasingly broad race map, Cuerda Larga still stands out for something unusual: the feeling that here, the mountain still calls the shots.

In the Sierra de Guadarrama there are races, and then there is Cuerda Larga. The difference is explained not only by kilometers or elevation gain, but by the way the route crosses Madrid’s mountain memory. Miraflores, the Morcuera, the summits above 2,000 meters, and the finish at Navacerrada make up a sober, bright, and demanding scene. A traverse like this does not need embellishment; naming it is enough to understand that it still holds a unique place in Spanish trail running.

Este artículo contiene enlaces de afiliado: si compras a través de ellos, se genera una pequeña comisión sin coste adicional para ti. Más información.