Col de la Pierre Saint-Martin

Col de la Pierre Saint-Martin

Rising from the village of Arette in the Pyrénées-Atlantiques, the ascent to the Col de la Pierre Saint-Martin is a relentless 25.8 km climb with a 1,452-meter elevation gain. It is a grueling test of endurance, featuring an average gradient of 5.6% that hides brutal middle sections peaking at 10%. The terrain shifts dramatically as you climb, moving from the lush green forests of the lower Béarn region to a stark, lunar-like limestone karst plateau near the 1,760-meter summit. This high-altitude pass serves as a natural border between France and Spain, famous for hosting the Tribute of the Three Cows, a peace treaty dating back to 1375 that remains the oldest active international agreement in Europe.

In the world of professional cycling, the climb is classified as Hors Catégorie (HC) due to its sheer difficulty. Its most legendary moment occurred during the 2015 Tour de France, when Chris Froome launched a devastating attack on Bastille Day to claim a solo stage victory and secure his hold on the yellow jersey. This ascent is particularly noted for its inconsistent gradients, often described as "climbing a wall" in the middle kilometers before easing slightly as the road reaches the unique geological landscape of the summit. The peak remains a significant landmark for those seeking the rugged isolation of the Western Pyrenees.