Blockhaus
The bucket-list Blockhaus climb in the Majella massif of Abruzzo is expected to provide the first real test for the general classification contenders after the longest day in the saddle. This long and brutal Apennine ascent will demand a steady climbing rhythm over sustained, steep gradients in the Majella, the highest massif in the Apennines.
Because the stage finishes at the summit, the peloton will arrive at the climb after several hours of racing before the decisive kilometres begin. Blockhaus has appeared several times in Giro history and often marks the first moment when the strongest climbers begin to separate themselves from the rest of the field.

- Stage: 7
- Date: May 15
- Location: Abruzzo, in the Maiella massif near the town of Roccamorice.
- Why it matters: First summit finish of the race with 4,500m of climbing under the belt.
- Distance: 20 km
- Metres climbing: 1,588 m
- Average gradient: 8%
- Max gradient: 14,5 %
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Corno alle Scale
Located in the northern Apennines, Corno alle Scale provides one of the first true mountain stages of the race. The route ascends gradually in the latter half until the final 12,8 kilometres, which rise steadily until the final 3 kilometres, which present a 10% average gradient. By the time riders reach the final kilometres, the peloton is usually already reduced. Climbers looking to gain time may launch attacks here in an effort to establish an advantage before the larger Alpine stages later in the race.
- Stage: 9
- Date: May 17
- Location: Emilia-Romagna
- Why it matters: Early mountain stage, long summit finish with steep final gradients.
Pila
The ascent to Pila, a ski resort set on a high plateau in the Aosta Valley, signals the Giro’s arrival in the Alps. Compared with the sharper climbs earlier in the race. The climb to Pila is 15.9 kilometres long, requiring a steady tempo with the average gradient sitting at 7.3%.
By the second week of a Grand Tour, fatigue begins to accumulate across the peloton. Support riders become harder to keep around team leaders, which increases the likelihood of attacks from general classification contenders.
Carì
The climb to Carì in Switzerland’s Ticino region forms the summit finish of one of the shortest but most intense mountain stages of the race. Although the stage itself is relatively compact, at 113 km, the route includes several earlier climbs that gradually wear down the peloton before the final ascent begins.
By the time riders reach the valley below Carì, the race is often already fragmented. After two weeks of racing, the steady gradients of the final climb can produce meaningful time gaps as fatigue begins to affect even the strongest riders.

- Stage: 16
- Date: May 26
- Location: Ticino, Switzerland
- Why it matters: Opening summit finish of the final week
- Distance: 18,3km
- Metres climbing: 1098 m
- Average gradient: 6%
- Max gradient: 18%
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Passo Giau
The Dolomites have long defined the Giro’s most dramatic stages. The course leading to this ascent from Feltre, after a local loop, includes several mountain passes. After 60km of flat, the riders face the double-digit gradient climbs of the Passo Duran, Passo Staulanza, Passo Giau, Passo Falzarego and the final ascent up the Piani di Pezzè, gradually reducing the group of contenders. By the time riders reach the final kilometres, only the strongest climbers are usually left near the front.

- Stage: 19
- Date: May 29
- Location: Dolomites
- Why it matters: Passo Giau, the Cima Coppi (the highest point of the race) at 2,236 m
- Distance: 12,7km
- Metres climbing: 1,094 m
- Average gradient: 8,4%
- Max gradient: 14%
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Piancavallo
The final mountain challenge of the race comes on the slopes of Piancavallo, which appears on the penultimate stage. After a flat start with a few gentle climbs, the riders tackle the 14 km climb to Piancavallo twice, and the first half is the steepest. After nearly three weeks of racing, even small accelerations on climbs like this can produce decisive gaps, making it difficult to hide weaknesses in the closing stages of the Giro.
Why the final week usually decides the Giro
The Giro d’Italia is often influenced by the way fatigue accumulates over three weeks of racing. Early stages may produce small time gaps, but the overall standings usually remain tightly grouped until the race reaches its most demanding mountain stages.
By the final week, riders have already spent many hours in the saddle, and recovery becomes just as important as climbing ability. This is why the high mountains of the Alps and Dolomites so often determine the outcome of the race.
What about the Giro d’Italia Women?
Alongside the men’s race, the Giro d’Italia Women has become one of the most important events in the women’s professional cycling calendar. Held later in the summer, the race features many of the sport’s strongest climbers and stage racers competing across several demanding stages in Italy.
While the routes differ from the men’s race, the event continues to highlight the same landscapes and mountain roads that make the Giro one of cycling’s most distinctive stage races.
Want to experience Giro climbs yourself?
After reading about the mountains that shape the Giro d’Italia, it’s hard not to wonder what those roads feel like when you take them on. The tough gradients of climbs like Blockhaus or Giau look dramatic on television or when viewing the profile, but riding them yourself is a completely different story.
With ROUVY, you can explore many of cycling’s famous mountain roads through immersive video routes and gradients. It’s a different way to connect with the race, and to experience the kind of climbs that make the Giro d’Italia one of cycling’s most distinctive Grand Tours.