Coll de la Gallina from Sant Julia

The Coll de la Gallina is Andorran motorcycling's best-kept secret. While the Port d'Envalira hogs all the attention thanks to its record altitude, the Gallina offers something the Envalira cannot: a classic mountain pass road — narrow, technical and lonely, with no commercial traffic — climbing from Sant Julià de Lòria (908 m) to 2,010 m over an 18-kilometer stretch where every curve is a challenge. Gradients reach 10% in several sections, hairpin bends follow one after another without respite, and the asphalt, though decent, lacks the width of the main roads.

The geology of the Coll de la Gallina is a condensed lesson in Pyrenean history. The rocks flanking the road on the lower slopes are Devonian limestones (400 million years old), giving way, as you gain altitude, to even older Silurian slates and schists. On the upper hairpins, the cut walls lining the road reveal the folds and faults of the Hercynian orogeny with textbook clarity. It is an open-air museum spanning 300 million years of Earth's history.

The road of the Coll de la Gallina is known among cyclists as one of the toughest climbs in the Pyrenees (it has been a Vuelta a España stage finish several times), but for riders it is a different kind of jewel: its narrowness demands precise riding, its tight bends require exact braking, and its steep ramps reward fine throttle control. It is not a road for speed, but for savoring the pure technique of mountain riding. The descent, with the Sant Julià valley opening up in front of the bike, is as rewarding as the climb.

Sant Julià de Lòria, at the foot of the climb, is the southernmost parish of Andorra and the gateway from Spain via the Farga de Moles border crossing. It is a pleasant town with an old quarter of narrow streets and stone houses, and home to the Tobacco Museum (housed in the former Reig factory), a curious space that tells the story of Andorra's tobacco industry, one of the principality's historical sources of wealth. For lunch, Celler d'en Toni serves wood-fire grilled meats (lamb ribs, Pyrenean beef chops) in a rustic stone-and-wood setting.

Rider's notes: the Coll de la Gallina is a toll-free mountain road, usually open from June to October. It is not a through road (it leads nowhere important except the Naturlandia ski runs), so traffic is minimal. Watch for gravel on the shoulders after heavy rain. The best strategy is to climb early in the morning, when the asphalt is dry and the sun lights up the eastern flank. Fuel stations in Sant Julià de Lòria (Andorran petrol is still the cheapest in the Pyrenees).