Stage 6 of the 2025 Itzulia Basque Country took place on .
The stage started in Eibar and finished in Eibar, starting at with an expected finish at (average speed of 42 km/h).
The total distance of the stage was 153.2 km. The stage included 7 categorized climb(s) and 2 intermediate sprint(s), and had a total elevation gain of 3394 m, and a total descent of -3344 m.
The stage included 7 categorized climb(s) and 2 intermediate sprint(s).
Elkorrieta is a KOM cat. 3 climb, which starts at 10.9 km (142.3 km to go) and ends at 13.4 km (139.8 km to go). It has total distance of 2.5 km, and an average gradient of 6.6%, going from 22 to 187 meters of altitude.
Azurki is a KOM cat. 1 climb, which starts at 19.6 km (133.6 km to go) and ends at 24.7 km (128.5 km to go). It has total distance of 5.1 km, and an average gradient of 7.3%, going from 292 to 666 meters of altitude.
Krabelin is a KOM cat. 1 climb, which starts at 41.6 km (111.5 km to go) and ends at 46.6 km (106.6 km to go). It has total distance of 5 km, and an average gradient of 9.5%, going from 105 to 580 meters of altitude.
Trabakua is a KOM cat. 3 climb, which starts at 65.4 km (87.8 km to go) and ends at 68.7 km (84.5 km to go). It has total distance of 3.3 km, and an average gradient of 6.9%, going from 171 to 399 meters of altitude.
Karabieta is a KOM cat. 2 climb, which starts at 81.3 km (71.8 km to go) and ends at 87.9 km (65.2 km to go). It has total distance of 6.6 km, and an average gradient of 6.5%, going from 128 to 561 meters of altitude.
Eibar is a Sprint at 109.4 km (43.8 km to go).
Izua is a KOM cat. 1 climb, which starts at 111.1 km (42 km to go) and ends at 115.3 km (37.9 km to go). It has total distance of 4.1 km, and an average gradient of 9.1%, going from 166 to 542 meters of altitude.
Markina-Xemein is a Sprint at 126.1 km (27 km to go).
Trabakua is a KOM cat. 3 climb, which starts at 131.6 km (21.6 km to go) and ends at 134.9 km (18.3 km to go). It has total distance of 3.3 km, and an average gradient of 6.9%, going from 171 to 399 meters of altitude.
The final 3 km for this stage starts at 150.2 km, has an average gradient of -0.3%, reaching 128 m of altitude.