Table of Contents:

Warning:

I’m sorry, but this isn’t an easy route. I know that’s not the best way to invite you on an adventure (or maybe it is). I’d rather be honest: this journey asks for some preparation, a bit of planning, and the calm needed to truly savor it.

I’ve planned this route to share some of the “typical” rides I often take around here. Some have become autumn classics, as if written into the memory of the landscape, while others belong to summer, when the heat invites you to seek out natural pools hidden in narrow valleys. The difficulty doesn’t really come from the climbs (which, as you’ll see, are not few), but from a few stretches where you’ll need to push the bike. If you travel light, without panniers, you’ll hardly feel it; with them, patience will be your best companion. Yet none of this takes away from the beauty of the journey. Quite the opposite: those sections are part of what makes it whole, leading you to hidden corners whose easier alternatives would diminish the spirit of the route.

My advice? Don’t hurry. Let slowbiking carry you with the drift. Enjoy every bend in the road, the silence broken by a river, a spontaneous chat with a local, and the soft blue the sky gifts these lands.

With the warning out of the way, let’s move on to introductions.

What is Deriva Lenta Slowbiking?

DL Slow is more than just a route, it’s a journey through diversity.

It weaves through regions stretching across Castellón, Teruel, and Tarragona, skirting rugged sierras and winding into hidden valleys. A route of contrasts, climbs that offer sweeping views and descents that lead to the freshness of crystal-clear pools.

You’ll climb mountain passes with endless views, cool off in natural pools sculpted in stone by patient water, and walk beneath the shade of Europe’s southernmost beech forest. Then, as if the journey itself paused for breath, the route unfolds into an inland sea of rice fields that shimmer like gold in summer, a sky alive with migratory birds and flamingos that tint the gaze pink in winter, and the quiet rhythm of greenways — perfect for pedaling at the unhurried pace this experience invites.

Part 1: A Giant Called Mont Caro

If you’re the kind of person who likes to check the route profile before setting off, you might feel a chill when you see that it all begins beneath the final beast. Don’t worry: Mont Caro may intimidate, but it also enchants. If you climb it with patience, the ascent becomes a balm: a blend of effort and euphoria that seeps into you, curve after curve.

The journey begins at Tortosa’s red bridge, the gateway to the Greenway that links the city with Alcañiz. You’ll only ride its first few kilometers, just enough to wake up your legs as you leave the Ebro behind and draw closer to the mountain’s foot. Don’t worry, you’ll truly enjoy it on your way back, when the Greenway surrenders to gravity and the sheer joy of descent.

That sight, a blend of grandeur and stillness, is one of the great gifts of this opening stretch, a quiet promise of everything yet to come.

Do plan your timing carefully. In summer, the heat can drain your water sooner than expected, while in winter, snow may force you to push the bike with your knees buried in white. The mountain has a strong temperament, and it deserves respect.

After descending towards Fredes along a beautiful yet demanding forest track, the pavement reappears, bidding us farewell to the Els Ports Natural Park and welcoming us into the Tinença de Benifassà Natural Park: a rugged and silent territory where griffon vultures glide over vast valleys and forests seem safe from the passage of time.

Part 2: The Balcony of La Tinença

Once we leave Fredes behind, the ride settles around a thousand meters above sea level, a kind of natural balcony from which the landscape unfolds as it would to a bird of prey. The steep slopes of Mont Caro are now behind you, and the effort turns into rhythm, that steady cadence that lets the traveler’s mind drift while the bicycle glides over a sea of mountains.

Crossing the Tinença de Benifassa means entering a rugged and silent land, where every bend in the road reveals a new balcony overlooking deep valleys, limestone ridges, and dense forests of pine and holm oak. The feeling is one of chosen isolation, of pure authenticity: few cars, few villages, and an endless sky. High on the cliffs, griffon vultures glide in slow circles, as if keeping company with your route.

Little by little, the terrain softens and the horizon opens wide, announcing the approach to Morella, the walled city. It rises in quiet majesty, encircled by more than two kilometers of medieval walls, with a castle perched atop the rock like an impossible nest. Its cobbled streets invite you to slow down, to lose yourself among Gothic gateways, noble houses, and squares where history still seems to breathe. Morella is not just a place to pass through; it is a pause, a reminder that every cycling journey also deserves a wander on foot.

After the visit, the route enters the Forcall valley, which unfolds surrounded by mountains like a natural shell. Its four rivers²meet in the heart of the village, whose layout preserves a medieval atmosphere, with stone arcades and a baroque church that surprises by its grandeur in such a small and secluded place. From here, the secondary roads lead toward the Sierra de Celumbres, where the terrain begins to climb again and the bicycle regains that slow but steady pedaling through open moorlands and mountain meadows. It is a stretch where the wind rules, and on clear days the views reach distant horizons that seem to go on forever.

Farther on lies Castellfort, one of the highest settlements in the region, where houses cling to the hillside and life seems shaped by the mountain and the winter cold.

This stretch, linking highland villages with the solitude of the mountains, weaves together the human and the wild: the quiet hospitality of the locals, the boundless landscapes of the sierra, and the whisper of the wind accompanying every turn of the pedals.

Part 3: The Upper Maestrazgo and its Bonus Track (La Estrella)

The journey moves into the Upper Maestrazgo, a land of history, stone, and quiet resilience. Here, the villages seem carved from rock and memory, clinging to impossible slopes or resting on high plateaus where the wind never stops its work.

The first stop is Villafranca del Cid, a town that once thrived on the wool trade and still preserves a medieval layout around its ancient walls. Cobbled streets, noble stone houses, and the feeling of a time that moves at its own unhurried pace.

Farther along you’ll reach Chodos and Atzeneta del Maestrat, villages that still preserve the rural soul of this region. Whitewashed stone houses, small squares where life gathers around a fountain, and paths scented with earth and firewood. Between them, the ruins of old watchtowers whisper of a time when this land stood as a frontier for centuries.

The route continues towards Culla, perhaps one of the most beautiful villages of the Maestrazgo, officially declared a Historic-Artistic Site. Its steep streets, the fortified church and the remains of the old castle rise above the houses, creating one of the most recognisable silhouettes in these mountains.

From there the path opens into a calmer landscape, where history gradually gives way to ancient trees and quiet ravines. Nearby stands the Carrasca de Culla, a monumental tree officially protected as a Monumental Tree of the Valencian Community. This thousand-year-old holm oak, one of the largest and longest-living in the region, rises majestically in the landscape and can be admired from outside the estate that protects it.

Further ahead, the route enters the Barranc dels Horts⁵, one of the most remarkable natural landscapes in the entire region. Here the scenery changes suddenly. The path approaches the course of the ravine and an ancient woodland of Valencian oaks and holm oaks appears, accompanying the water and the small spring that emerges among the rocks.

The Alto Maestrazgo is like this: a blend of villages that endure, of history etched into old walls, of mountains shaping the horizon, and of places that, even in abandonment, remind us of the value of memory.
And although La Estrella lies beyond its borders, I wanted to include it in DL Slow, because its story fits perfectly into this journey: a reminder that routes are not only drawn on maps, but also by people.

Part 4: When the Inland Opens to the Mediterranean

Behind us lies the Upper Maestrazgo, with the imposing silhouette of the Mola d’Ares outlined against the sky and the picturesque, almost uninhabited hamlet of La Llàcua, seemingly resisting oblivion among stone terraces and old farmhouses. The journey then turns northeast, taking us once more into the Tinença de Benifassà, that land of silent mountains and deep valleys that welcomed us at the beginning of the route.

The road leads us to Vallibona, a whitewashed village clinging to the hillside, with narrow streets and balconies overlooking the mountains. From here, the road to Rossell winds its way through shifting scenery framed by trees and ever-changing views: dense forests, open meadows, and ravines that slice the mountains vertically. It is a stretch meant to be ridden slowly, letting your gaze drift toward the horizon.

Little by little, the landscape opens into the Baix Maestrat, where the mountains give way to cultivated fields. The route passes through historic villages such as Sant Mateu, with its imposing Gothic church and main square that has hosted markets and fairs since the Middle Ages; La Salzadella, known for the sweetness of its cherries; and Santa Magdalena de Pulpis, which still preserves the walls of its Templar castle perched atop the hill.

From here, the bicycle enters another natural treasure, the Serra d’Irta, a natural park that unfolds like a wild strip between the mountains and the sea. Its paths allow you to ride beside the Mediterranean, passing secluded coves, pine trees that nearly touch the shore, and the silhouette of Xivert Castle, watching from above as it has for centuries. The air changes here; it carries the scent of salt, resin, and open horizons.

The route then leads us to Peñíscola, its old town perched upon the rock, with the castle of Pope Luna gazing defiantly out to sea. After wandering for a while through its narrow cobbled streets, it is time to turn inland once more, but not before savoring the Mediterranean one last time along the beautiful promenade that stretches for seven kilometers of beach to Benicarló, the town where I was born.

Now surrounded by an agricultural landscape that shifts between green and ochre with the seasons, the fields of gnarled olive trees and rows of orange groves fill the air with their fragrance as you pedal toward La Sénia, a place of transition leading into one of the most beautiful areas for those who love autumn.

Here, when summer comes to an end, the forests offer a brief and delicate spectacle: leaves changing color from green to golden yellow, and from there to deep red, creating carpets of fallen leaves that crunch beneath the wheels.

Part 5: The Land of Monuments

If there is one stretch that captures the essence of this route, it is this one. For here, the “monuments” are not carved from stone nor shaped by human hands, but created by nature’s wisdom and the quiet patience of time. We enter the Els Ports Natural Park once again, where every turn reveals a new expression of grandeur.

The route begins with the climb to Casetes Velles, the access point to the Cova del Vidre. It opens at 1,120 meters above sea level under the spur of the Mola del Boix, on the right bank of the Lloret ravine. Its triangular mouth, of enormous dimensions (43 m long by 30 wide and 14 high), impresses the traveler who approaches it.

Soon after comes one of the toughest stretches, a steep ravine where you must carry the bike for about a three hundred meters. The secret lies in patience. Once this challenge is behind you, the effort is rewarded with a beautiful path descending toward one of the botanical treasures of the route, the southernmost beech forest in Europe.

There stands the Faig Pare, a majestic beech tree over 250 years old, rising 25 meters high with a trunk four meters around. Its twisted roots emerge from the earth like intertwined candelabra, holding the silence of the forest. For centuries, it has been a symbol of resilience, memory, and beauty in the Els Ports massif.

In 2024, a strong gust of wind broke one of its main branches, reminding us that even giants are not eternal.
In the gallery, you can find, as a tribute to this monumental tree ⁶, photographs of the Faig Pare before that wound, when it still unfolded all its majesty beneath the cool shadows of the beech forest.

The journey continues among beeches and yews until it meets another giant, the Pi Gros del Retaule, the largest conifer in the Iberian Peninsula. Standing 31.5 meters tall and more than 700 years old, this black pine rises straight and proud, its trunk perfectly cylindrical. Its scars, traces of past resin and wood harvesting, are the marks of an ancient dialogue between nature and humankind.

From here, the road descends toward the Ulldecona reservoir, a stretch of calm water nestled among the mountains, reflecting the sky above. But the rest is short-lived, for it is time to climb again, a fair penance for so much beauty. The road rises once more to Fredes, now paved, allowing you to enjoy at ease the views and the whitewashed silhouette of the Monastery of Santa María de Benifassà, founded in the thirteenth century by the Cistercian order. Its Gothic walls emerge among the mountains like a quiet apparition, reminding us that spirituality too once sought refuge in these valleys.

The route continues toward the Tossal del Rei, a 1,350-meter summit where Aragon, Catalonia, and the Valencian Community meet. Here, a single stone marks the spot where three lands join hands, evoking the memory of the old Crown of Aragon.

From there we turn toward Sant Miquel d’Espinalvar, in the Matarraña region of Teruel. A small hermitage and several thick-walled stone farmhouses make up this historic site, once a gathering place for farming families, trade, and celebrations. The solitude that now surrounds it contrasts with the life it once held, offering a pause filled with history.

After a long descent we arrive at Beceite, a mountain village where the murmur of water fills the air. Here you can choose to rest and explore the Parrizal de Beceite, a natural site of wooden walkways and turquoise waters flowing through narrow canyons. Walking between its vertical walls is to feel the power of water shaping stone over the centuries.

Back on the main route, an essential stop is the Toll de Vidre, a clear natural pool with a small waterfall and a pebbled shore where travelers can cool off or simply lie in the sun.

Soon after, we enter Els Estrets d’Arnes, a series of canyons and sheer cliffs where the river has carved a chain of crystal-clear pools. Here, the water traces one natural basin after another, perfect for a summer swim or simply to pause and watch how life flows between rock and water.

Not far away lies the Toll Blau, a pool of intensely blue water, hidden like a treasure at the foot of the mountain. A place the path approaches discreetly, inviting you to stop, dip your feet in the water, and let the silence of the surroundings do the rest.

From Horta we reconnect with the Greenway of the Val de Zafán, which leads us downhill toward Tortosa. It is a gentle path, dotted with tunnels and restored stations, and offers the chance to stop at places like La Fontcalda, where thermal waters spring from the heart of the gorge and offer travelers a final moment of rest.

The route can end here, at the red bridge of Tortosa, closing the circle where everything began. Yet it can also open to one last gift, the loop through the Ebro Delta, with its golden rice fields, winter flamingos, and the infinite calm of its plains. For this adventure, like the drift itself, does not always need an ending; sometimes it is enough simply to keep pedaling toward the horizon.

Part 6: The Peace of the Ebro Delta

There’s no better way to finish a route with so much elevation gain than by riding through a natural park whose highest natural mountain barely rises six meters above sea level. Many look down on the Ebro Delta because it offers no climbs or mountain passes; yet its magic lies precisely in the opposite. Here, effort isn’t measured in meters of ascent, but in moments of serenity.

The Delta is a place that heals. It soothes stress, sadness, boredom, and anxiety. Its peace is not found in climbs or technique, but along the greenways that wind through rice fields, in the stillness of its lagoons, and in the quiet grace of thousands of birds that live unhurried lives. Its villages blend seamlessly with the landscape, and its people hold the privilege of waking each day in a bucolic setting where life flows to the slow rhythm of nature.

From Tortosa we head towards the Delta following a greenway that we will also use for the return journey⁷. Once in Amposta, it is worth making a short detour to the Ullals de Baltasar, freshwater springs that emerge from underground. These small circular ponds, between 3 and 7 metres deep, maintain a constant temperature throughout the year and shelter unique fauna and flora within the Delta. In a landscape dominated by rice fields, the ullals feel like small oases of biodiversity.

On the way back to the Ebro, we follow its bank along one of the Greenways until we reach the Mediterranean, where the route rewards us with Migjorn Beach, a stretch of sand open to the horizon. It is the perfect place to feel the meeting of river and sea, of journey and destination.

On the way back, the bicycle leads us to the Tancada lagoon, the spot with the highest concentration of flamingos in the entire Delta. Its brackish waters are teeming with life—gulls, ducks, cormorants—forming a mosaic of birds that turn this place into a spectacle for the senses. Three viewing platforms allow you to watch the gentle movement of the birds without disturbing them, privileged windows into a living ecosystem.

From lagoon to lagoon we arrive at l’Encanyissada, the largest in the Delta. There stands the Casa de Fusta, a wooden house built in the 1920s by hunters and now transformed into the natural park’s interpretation center. Inside, an ornithological museum reveals the richness of the birdlife that inhabits the Delta; outside, a viewing platform opens onto the lagoon, reminding us of the boundless scale of this horizontal landscape.

We then cross the Lo Passador Bridge over the Ebro River, and once on the opposite bank, the route enters its final act. Pedalling becomes even more unhurried, following quiet tracks that lead into the northern part of the Delta. Here the landscape opens up and silence gains presence: less traffic, more horizon, a stronger sense of riding through a land that invites observation without haste.

Soon after, one of the most evocative places along the route appears: the boat cemetery. Old wooden boats lie stranded on the mud, worn down by time and forgetfulness. There are no signs or solemn gestures; its power lies in what it suggests. They are remnants of a life tied to the river and to fishing, silent traces of a Delta that has always been changing, leaving fragments of its history behind.

Shortly after, the route connects Lo Goleró⁸and the Bassa de les Olles in a single, unhurried gesture. Two discreet spaces, open to sky and wind, where the Delta speaks in a low voice: shallow water, low vegetation, and the constant presence of birds that find refuge here. Riding through this section means moving carefully, almost as if asking permission, understanding that the Delta’s true richness does not seek attention, but simply endures.

From Bassa de les Olles, the journey begins a gentle return towards the interior of the Delta. The bicycle moves on between rice fields and canals until it reaches a greenway running parallel to the Ebro River, following its calm course. The river is no longer experienced as a destination or a frontier, but as a guiding thread that leads the final kilometres of the route.

The arrival into Tortosa comes without fanfare, allowing the body to absorb what has been lived. There is no abrupt ending or final climb to mark the close: only the steady flow of the Ebro River and the feeling of having completed a wide, generous circle that resists ending all at once.

The circle closes, but the calm of the Delta remains within. Because beyond mountains and sea, this final stretch confirms a simple truth: beauty is not always measured in height or effort. Sometimes it lives in forgotten boats, in a silent observatory, in a lagoon open to the wind, or in the simple act of riding alongside a river that moves unhurriedly towards the sea.