Anello di escursionismo di 174.01 km con partenza da Burgos. Il dislivello positivo è di 1502 m, con un'altitudine compresa tra 767 m e 937 m. Durata stimata: 55 h 50 min. Comune di partenza: Burgos (Castilla y León, Espagne).
Questa escursione comprende 11 salite significative. Con un dislivello positivo totale di 837 m su 48.11 km, con una pendenza media del 1.7%.
- Climb 1 (at km 18.28 km): +90 m over 3.25 km, average slope 2.8%
- Climb 2 (at km 24.58 km): +91 m over 2.33 km, average slope 3.9%
- Climb 3 (at km 27.60 km): +39 m over 957 m, average slope 4.1%
- Climb 4 (at km 40.90 km): +31 m over 623 m, average slope 5.0%
- Climb 5 (at km 44.31 km): +138 m over 1.21 km, average slope 11.4%
- Climb 6 (at km 55.74 km): +69 m over 3.78 km, average slope 1.8%
- Climb 7 (at km 81.81 km): +68 m over 8.27 km, average slope 0.8%
- Climb 8 (at km 106.18 km): +92 m over 12.94 km, average slope 0.7%
- Climb 9 (at km 115.14 km): +42 m over 1.39 km, average slope 3.0%
- Climb 10 (at km 139.97 km): +94 m over 9.15 km, average slope 1.0%
- Climb 11 (at km 173.13 km): +83 m over 4.20 km, average slope 2.0%
