Itzulia Stage 5 Eibar Preview: Eight Climbs, Two Cat-1 Walls And The Last Real Chance For A 1'53" Swing
The 2026 Itzulia Basque Country is now one stage from its youngest ever winner. Twenty-four hours after Primož Roglič answered the Galdakao queen stage and still surrendered eight seconds on the line, the peloton rolls out of Donostia-San Sebastián on Friday morning for stage 5 — 162 kilometres, eight categorised climbs, and the last realistically race-changing day before Saturday's closing time trial in Bergara. Paul Seixas leaves the coast in yellow with a 1'53" cushion and five categorised climbs and one full descending mountain stage of tactical road still to come. If there is a day to break the 19-year-old, it is this one.
The profile reads like an Itzulia cliché. Eight categorised climbs, almost 3,000 metres of climbing, zero flat kilometres, and a punchy false-flat finale that will not reward a late solo attack from a pure climber but will reward a sustained twenty-minute effort from a puncheur who can still sprint at the end of a hard day. It is precisely the stage that Roglič, Enric Mas and Mattias Skjelmose have been waiting for all week, and the one that Decathlon-AG2R's head DS Stéphane Goubert admitted on Thursday night was "the stage that frightens me more than yesterday did."
The decisive terrain begins roughly 100 kilometres in, when the race reaches the fifth climb of the day: the cat-1 Krabelin, a 5-kilometre wall averaging 9.6%. It is the first genuinely selective ramp of the stage and, on paper, the lever Roglič needs — a climb long enough and steep enough to rip the breakaway back and put Seixas's young lieutenants on the limit. The reality has been more complicated. Across the first four stages, Felix Gall and Ben O'Connor have ridden at a level Decathlon-AG2R did not think they had in early April, and Seixas himself has lost time to nobody on a categorised climb in this race. Krabelin is the test, not the trap.
Then comes the day's real GC lever: the cat-1 Izua, 4.1 kilometres at 9.25%, with the summit 26.9 kilometres from the Eibar finish. This is the wall where Carlos Rodríguez took his breakthrough Itzulia stage in 2023 and Jonas Vingegaard cracked Roglič in 2024. If Roglič has an attack, this is the climb he must launch it on — late enough that any response from Seixas costs a real effort, early enough that the Frenchman is still 27 kilometres from safety with no teammate in the front group. Red Bull-Bora-Hansgrohe DS Patxi Vila on Thursday evening: "We know where the race is. We also know Paul is climbing better than all of us, honestly. We need chaos."
The final climb is Urkaregi, 5.2 kilometres at 4.7%, shallower but with a twisting wooded descent and a false-flat run-in that rewards a chase group that commits. From the Urkaregi summit it is 12.5 kilometres to the line and only one genuine descent — the kind of profile that has historically produced breakaway wins when the GC group has cancelled each other out, and exactly the profile that Seixas, the race leader who has not ceded a centimetre of maillot on a descent all week, will be happy to see. If Roglič cannot crack Seixas on Izua, the stage will almost certainly go to a breakaway rider.
UAE's situation is simpler and more desperate. With Isaac del Toro out of the race after the stage 3 crash and Juan Ayuso ejected from the front group on the Elorritxueta descent on Thursday, the Emirati squad has no card left to play for GC. UAE DS Andrej Hauptman on Thursday evening: "Our race now is to protect Juan's top ten and make sure we leave Bergara with the forms we need for Amstel. Stage 5 is not a stage we will attack." That is a seismic admission from a team that began the week with three GC riders.
The outside variables are the weather — gusty south-easterlies in the afternoon with a 20% chance of showers on the Krabelin summit — and the breakaway composition. With Ineos Grenadiers' Axel Laurance already holding the stage 3 win, the French squad will almost certainly put another rider in the move. Lidl-Trek, who have nothing to defend after Skjelmose's quiet stage 4, are expected to send Skjelmose himself into the early break — the cleanest way for the Dane to get a result from a week that has otherwise disappeared into the background of the Seixas show.
For Seixas, the task is familiar and simple. Mark Roglič. Stay on the wheel of whoever the Slovenian brings with him. Finish the day with his 1'53" lead intact or close to it, and ride Saturday's 23-kilometre Bergara time trial — a discipline in which he is already the sport's best U23 rider — to the youngest Itzulia Basque Country overall victory of the professional era. Goubert in the team hotel on Thursday night: "One more mountain day. Then a time trial. That is the sentence I have been waiting all winter to say about Paul at a WorldTour race."