Distance: 61km   Unevenness: 1300m


Return tour through the high area between Isaba and Arette's ski resort.

Tres fotos fijas

Depending on the type and style of each cyclist, this route can serve different purposes.
If we speak of accomplished cyclists it may serve to unwind and make a good touchdown, filling one evening after a long car journey.
If we speak of occasional cyclists or beginners, this route will allow them to make a day of cycling that goes through high zones across the higher cycling point (asphalt) in the area and foresee the essence of the big descents and ascents of the northern slope in the short distance between the top of the port and the ski resort of Arette.


Itinerarie: Isaba NA137 - Mata de Haya - Pto. La Piedra de San Martín D132 - Arette St esqui - Pto. La Piedra de San Martín NA137 - Mata de Haya - Isaba

Route on Wikiloc map

If you want to see the route on wikiloc website click on the green icon on the map.

Multimedia and/or description of the route

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Dejando atrás el llano de Belagua, ascenso a La Pierre de St Martín por Isaba.

Tras un primer tramo en suave ascenso hasta la Mata de Haya se afronta un sostenido muro de 8 km al 7% con alguna rampa de 9 y 10%.

Otros 6 kilómetros algo menos exigentes nos llevan atravesando el complejo kárstico de Larra a la cima del Portillo de Ernaz, comúnmente denominado La Piedra de San Martín, punto culminante del recorrido (1762 m).

El pico Anie sobre el karst de Larra, territorio pirenaico con ambiente propio.

COL de La Pierre de St Martín

Después, breve descenso entre pastizales con olor a vertiente norte hasta los edificios de la estación de esquí Arette-La Pierre Saint Martin.


De vuelta al puerto remontamos los 2,5 km antes descendidos, 6% con algún pequeño tramo al 12% y descenso rápido y limpio hacia la Mata de Haya.

Contemplar la posibilidad de seccionar dicho tramo realizando una parada en la histórica Venta de Juan Pito en la parte media del puerto. De la Mata de Haya a Isaba llaneo con tendencia descendente.

Descenso de La Pierre de St Martín de vuelta a Isaba

Criteria of graduation of the routes

We are where we are, in the Atlantic Pyrenees, with a plain to the North with localities at very low altitude and ports that are close to the 2000m range.
The southern slope is more "human", towns are in a higher altitude and the slopes are not so important.
The vast majority of the routes cover the ports of the "greats": Issarbe, La Piedra de St Martin, Laberouat, Bagargi, Artaburu, Arnostegi, Ahuski, Larrau...with slopes ranging between 1000 and 1700 meters. Some routes ascent one of these ports, others 2 or 3 and even more.
We anticipated this so the criteria are clear for each 6 levels that we have chosen for the ranking of the routes.

  1. Walks or family routes: Routes with light slopes and little travel. Suitable for untrained family groups or for people who usually don't use the bike.
  2. Easy: Routes with a slope that can reach 1000 meters but facing none of the large ports.
    The distance will range between 40 and 60 kilometers.
  3. Moderate: Routes with one of the "great" ports or a combination of similar difficulty. The slopes can be really important and slopes can range between 1000 and 2000 meters.
    An example of "moderate" is the Artzaiak S stage through Bagargi. The port is tough, but it is the only major difficulty of the day, i.e. we have the whole day for this task, that’s why we left it in "moderate"..
    The distance will vary between 60 and 100 kilometers.
  4. Hard: Routes with a slope ranging around 2500 meters. There may have to ascend 2 ports of the "greats" or one and several of the "minor".
    The distance will vary between 90 and 130 kilometers. An example of how difficult it can be, will be the short route of the well-known Larra-Larrau.
  5. Very hard: Routes ranging from the 2500 and 4000 meters of altitude. Sometimes there may have to ascend the 3 ports of the '' greats ''. The distance will exceed the 100 kilometers and may reach the 200.
    The long route of Larra-Larrau is one of the exponents of how difficult this route is.
  6. Challenge: In these times there is a public that demands "more" yet. To them arises the concept of "challenge": stages of more than a day in "non-stop" mode, 4500-5000 or even more meters of altitude routes, individual or group time trial with 3000 meters of altitude and over 100 kilometers of route.
    Finally, a variety of what riders would usually call "nonsense" which to be more elegant, here we call it, 'Challenges'.
Tracks download

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Altimetrys of ports in other web sites
foto de pie de pagina: bosque
pie de pagina: bosque