We've also had Nairo Quintana take a breakthrough win in 2013 early in his career, Primoz Roglic (2018 and 2021), Daniel Martínez, in 2023 Jonas Vingegaard and
in 2025 João Almeida who dominated the race throughout its mountain stages.
Profile stage 1 (ITT): Bilbao - Bilbao
Bilbao - Bilbao, 13.8 kilometers
The race starts off as usual with a time trial and this one will be in Bilbao, perhaps the most important city in the region, for a stage that is also pretty important. It is 13.8 kilometers in length but it is a difficult ITT, very difficult.
The efforts starts with a 2.4 kilometer long climb which averages 7% right from the start line, and then the riders take on a very fast and slightly technical descent. There are only a few flat kilometers before the final 500-meter long ramp which takes the riders up to 9%, an explosive finish to an explosive time trial that is guided towards the GC riders straight away.
Profile stage 2: Pamplona - Mendukilo Kobazuloa
Pamplona - Mendukilo Kobazuloa, 164.4 kilometers
The second day of the race is hilly, as the riders will find throughout the rest of the week. It would be unfair to call it a warm-up however, as the peloton has ascents from start to finish, and even a breakaway could be considered as the start is hard enough for a very strong group to go up the road.
However the 164-kilometer long day will have its most important point in the ascent to San Miguel de Aralar, which is 9.4 kilometers long at 7.9%, a proper mountain. The climb ends with 20 kilometers to go and is likely to see some action, as most of the route to the finish is downhill, with the exception of one final climb.
In Mendukilo Kobazuloa the riders have a 3.5-kilometer long climb, which does not get significantly steep however towards the summit comes close to 10%. One way or another, there will be differences.
Profile stage 3: Bassauri - Bassauri
Bassauri - Bassauri, 152.9 kilometers
Perhaps the easiest stage of the race, and the most likely to end in a sprint - although of course this would be between climbers and classics specialists. The first half of the day isn't overly difficult and the main climb ends with 32 kilometers to go, being 8 kilometers long at 5%.
There are then two explosive hilltops in the final kilometers, one ending with just over 7 kilometers to go which is 1.5 kilometers long at 6.9%; and the final one coincides with the finish line in Bassauri which is 1.2 kilometers long at 6%. It's a likely sprint, as the ascent becomes steeper towards the summit and the final 400 meters have a 9% gradient.
Profile stage 4: Galdakao - Galdakao
Galdakao - Galdakao, 167.9 kilometers
A roller-coaster day on the fourth stage of Itzulia, it sees the riders take on seven categorized climbs and also a hilltop finish. Just over 3000 meters of climbing, although inbetween climbs the roads are flatter than the typical Itzulia stage.
They part part of the stage will begin in the last three climbs, as right before there is a long flat section where the peloton can comfortably cut gaps. But from the moment the ascent to the Alto de El Vivero begins, this changes. The climb is 4.3 kilometers long at 8.3% and ends with 29 kilometers to go.
Following the descent there is the approach to the next one, with a bonus sprint coming with 13 to go. The penultimate climb begins immediately after and it is 3.2 kilometers at 8%. This is a climb that can make serious differences, as the riders will have to go all-out from the base, with the first half of the climb averaging 10%.
This ascent ends with 9 kilometers to go and the descent back to Galdakao is technical. The climbing only ends at the finish line however, with the final kilometers averaging 7%, making gaps still possible, despite all the difficulties that have come beforehand.
Profile stage 5: Eibar - Eibar
Eibar - Eibar, 176.5 kilometers
The queen stage is the day that starts and finishes in Eibar, has been the case often in recent years. Whilst the climbs are not overly long, this is what the Basque Country has to offer in terms of climbing, which totals at over 4000 meters throughout the 176-kilometer long stage.
It is a brute, with eight categorized climbs, several of them very steep, and that being the case right from the start. There are two ascents right at the start of the stage which can make a GC selection, it can lead to the formation of a very strong breakaway, or a GC raid right away... 5.7 kilometers at 7.7% in Arzuki alone, but the gradients go above that quite a lot.
The ascent to Krabelin, which is one of vertents to go up the mythical Alto de Arrate, comes with 67 kilometers to go and is the hardest climb of the day, in total 5 kilometers long at 9.4% - but again, with much steeper gradients. Then there is a bonus sprint on the valley, the climb to Trabakua (3.4Km; 6.7%; 45Km to go) and three explosive hilltops right after...
But then the stage just continues, with the same amount of difficulty. In terms of average only then will the riders reach the steepest climb of the day to Izua, which is 3.6 kilometers long at a whole 10%, ending with 26 kilometers to go.
It's inevitable that the race has been split completely by this time, but the riders still have one more climb in Urkaregi, much more gentle (5.3Km, 4.3%), ending with 12 kilometers to go. After the descent, the final kilometers still have a slight false-flat gradient to the finish which can be used to grow or cut down gaps before the finale in Eibar.
Profile stage 6: Goiper-Antzuola - Bergara
Goiper-Antzuola - Bergara, 136.2 kilometers
The final stage of the race can still lead to immense GC action, with longer climbs to be tackled. The start of the day has a difficult one right away, 4.6 kilometers at 7.6%, which means the GC fight can open right on the first minutes of the stage.
The riders then, on two occasions, go up a two-climb combo. One is Elosua (6.9Km; 7.6%) and the other is Azkarate (3Km; 7.2%). The final team the second one is climbed comes with 40 kilometers to go, this mini-circuit can see big attacks and the race turned around once again.
But after a long flat section the riders head into Bergara, after 136 kilometers. Before the finish there is still one more ascent, not as difficult but one that can lead to tactical racing, as it is 7.2 kilometers long at 5.4%, ending with 9 kilometers to go.