Col de Portel is a Cat 1 climb to 1432 m, between Saint-Girons and Foix in the "massif de l'Arize". It was crossed by Le Tour de France in 2008.
From Saint-Girons (west), the climb to the Col de Portel crosses the Col de la Crouzette (1,241 m). To the Col de la Crouzette the climb is 11.2 km @ 6.5%, with a short section at 10.8%. From the Col de la Crouzette to the summit is a further 3.5 km, gaining an extra 191 m, with the steepest section (near the summit) at 8.0%.
Starting from la Mouline, (east) the climb to the Col de Portel crosses the Mur de Péguère (1,375 m). To the Mur de Péguère the climb is 18 km long; over this distance, the climb is 872 m (an average of 4.8%). From the Mur de Péguère to the summit is a further 3.5 km, gaining a further 57 m height.