Classification: 2.UWT - Category ME
7 April to 12 April
List of segments
| 1 | Arzubiaga | KOM cat. 3 | 1 km | 27.9 m | 0 m |
| 2 | Alto de la Oliva | KOM cat. 3 | 4.9 km | 217.9 m | -3.3 m |
| 3 | Meaga | KOM cat. 3 | 2.8 km | 115.7 m | 0 m |
| 3 | Andazarrate | KOM cat. 3 | 13.9 km | 369.6 m | -15.8 m |
| 3 | Alkiza | KOM cat. 3 | 4 km | 262.3 m | -2 m |
| 3 | Santa Ageda | KOM cat. 2 | 9 km | 629.5 m | -16.1 m |
| 3 | Mandubia | KOM cat. 3 | 5.3 km | 282 m | -0.2 m |
| 3 | Gainza | KOM cat. 3 | 2.2 km | 268.4 m | -2.7 m |
| 3 | Lazkaomendi | KOM cat. 3 | 1.4 km | 139.3 m | -0.4 m |
| 3 | Descent | Descent | 2.2 km | 0 m | -161 m |
| 4 | Descent | Descent | 4.7 km | 0 m | -218.7 m |
| 4 | Descent | Descent | 2.9 km | 0.1 m | -261.5 m |
| 4 | Bizkaiko Begiratokia | KOM cat. 3 | 2 km | 90.4 m | -3.5 m |
| 4 | Gontzagaraigana | KOM cat. 3 | 2.6 km | 164 m | 0 m |
| 4 | Lekoitzegane | KOM cat. 3 | 3.4 km | 255.8 m | 0 m |
| 4 | Milloi | KOM cat. 3 | 3.5 km | 137.9 m | -0.1 m |
| 4 | Izua | KOM cat. 1 | 3.7 km | 382.3 m | -35.5 m |
| 5 | Descent | Descent | 1.5 km | 1.8 m | -105.7 m |
| 5 | Descent | Descent | 3.6 km | 0 m | -189.5 m |
| 5 | Descent | Descent | 2.9 km | 1.7 m | -138.2 m |
| 5 | Descent | Descent | 3.9 km | 0.1 m | -184.6 m |
| 5 | Descent | Descent | 5.5 km | 0 m | -251.3 m |
| 5 | Descent | Descent | 3.6 km | 34.6 m | -172.7 m |
| 5 | Descent | Descent | 4.7 km | 0 m | -268.6 m |
| 5 | Descent | Descent | 7.9 km | 40.2 m | -355.4 m |
| 6 | Elkorrieta | KOM cat. 3 | 2.5 km | 173.2 m | -7.7 m |
| 6 | Azurki | KOM cat. 1 | 5.1 km | 382.7 m | -8.4 m |
| 6 | Krabelin | KOM cat. 1 | 5 km | 474.5 m | -0.2 m |
| 6 | Trabakua | KOM cat. 3 | 3.3 km | 228.1 m | 0 m |
| 6 | Descent | Descent | 5.7 km | 10.8 m | -191.4 m |
| 6 | Descent | Descent | 4.6 km | 0.9 m | -355.8 m |
| 6 | Izua | KOM cat. 1 | 4.1 km | 376.2 m | -0.6 m |
| 6 | Descent | Descent | 3.4 km | 5.5 m | -170.9 m |
| 6 | Descent | Descent | 2.9 km | 0 m | -144.1 m |
