Circuito de senderismo de 62.84 km desde Zegama. El desnivel positivo es de 2930 m, con una altitud entre 16 m y 850 m. Duración estimada: 21 h 20 min. Municipio de salida: Zegama (Euskadi, Espagne).
Esta ruta incluye 10 subidas significativas. Con un desnivel acumulado de 1443 m a lo largo de 13.36 km, con una pendiente media del 10.8%.
- Climb 1 (at km 2.11 km): +155 m over 1.45 km, average slope 10.7%
- Climb 2 (at km 8.19 km): +65 m over 486 m, average slope 13.4%
- Climb 3 (at km 16.78 km): +389 m over 3.24 km, average slope 12.0%
- Climb 4 (at km 19.17 km): +67 m over 354 m, average slope 18.9%
- Climb 5 (at km 21.93 km): +165 m over 1.17 km, average slope 14.1%
- Climb 6 (at km 30.80 km): +50 m over 881 m, average slope 5.7%
- Climb 7 (at km 37.43 km): +292 m over 3.17 km, average slope 9.2%
- Climb 8 (at km 44.58 km): +81 m over 956 m, average slope 8.5%
- Climb 9 (at km 49.22 km): +117 m over 1.21 km, average slope 9.7%
- Climb 10 (at km 50.72 km): +62 m over 451 m, average slope 13.8%
