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Passo dello Stelvio – King of the Dolomites
No pass in Italy embodies the dramatic character of the Giro d'Italia quite like the Passo dello Stelvio. At 2,757 metres – making it the highest paved mountain pass in the Eastern Alps and one of the highest in the entire Alps – it connects South Tyrol with Lombardy and has been the stage for epic mountain battles for decades. The famous 48 hairpin bends on the Prato side, the snow-covered summit walls and the deep valleys of the Stelvio National Park make the Stelvio a cornerstone of cycling culture – for professionals, fans and thousands of amateur riders alike.
Geography and Location
The Passo dello Stelvio (German: Stilfser Joch) lies in the heart of the Alps on the border between South Tyrol and the Italian province of Sondrio. It connects the Valtellina with the Vinschgau and crosses the Ortler, South Tyrol's highest mountain. The SS38 road is technically demanding, scenically breathtaking and meteorologically unpredictable: snow, fog and icy temperatures can occur even in high summer.
The pass lies entirely within the Stelvio National Park, one of the largest protected areas in the Alps. The vegetation ranges from forested valley slopes through alpine meadows to the barren summit zone. For cyclists this means: long, steady climbs without urban supply points – anyone riding the Stelvio must be self-sufficient.
Technical Key Facts
UCI categorisation of climbs by length, gradient and elevation determines how many mountain points are awarded at a pass. For more on the technical classification, see Categorisation of Climbs.
Prato vs. Bormio Approach Compared
History: From Trade Route to Giro Myth
The Stelvio was completed in 1825 under Austrian rule and initially served military and economic purposes. For cycling it remained largely off the radar – until the Giro d'Italia first crossed the pass in 1953, ushering in a new era.
The Coppi Legend of 1953
On 1 June 1953, on stage 19 from Bolzano to Bormio, Fausto Coppi wrote cycling history. The "Campione d'Italia" attacked at the foot of the Stelvio, rode alone over the pass and secured not only the stage win but also the pink jersey. This ride is still regarded as one of the defining performances of the Golden Era – Coppi as a symbol of elegance, power and tactical superiority on Italy's hardest climb.
Milestones on the Stelvio
Stelvio in Professional Cycling – Timeline
A Giro d'Italia without a Stelvio stage is considered incomplete by Italian fans. The Special Stages of the Giro are inseparably linked to this pass – proof of its cult status in cycling culture.
Why the Stelvio Is So Decisive
Unlike flatter passes, the Stelvio combines extreme altitude, long distance and visual drama. It often appears as a Cima Coppi candidate – the highest point of a Giro edition, which brings special mountain classification points. For GC riders and classification specialists, the Stelvio is a test on multiple levels.
Tactical Role in the Race
- Early selection: The field already splits on the lower serpentines; weaker climbers lose contact.
- Work of the super-domestiques: Domestiques set the pace to neutralise attackers or position their captain.
- Altitude: From around 2,000 m, oxygen saturation drops noticeably – endurance and acclimatisation decide.
- Weather extremes: Snow, rain and cold can turn a stage within hours.
- Descent after the summit: Whoever gains time at the top must master the descent towards Bormio or Prato with technical skill.
Cima Coppi
The highest point of the Giro year bears the name "Cima Coppi" in honour of Fausto Coppi. When the Stelvio is ridden in an edition, it is almost always the bearer of this prestigious classification – regardless of whether the stage ends at the summit or continues into the valley.
Legendary Riders and Moments
Over seven decades, numerous champions have left their mark on the Stelvio. Coppi, Merckx, Hinault, Pantani and, in more recent times, Nairo Quintana, Chris Froome and Egan Bernal shaped different eras.
Unforgettable Scenes
- Fausto Coppi (1953): Solo ride over the entire pass – birth of a legend.
- Marco Pantani (1994): Aggressive attacking and King of the Mountains triumph in the Dolomites.
- Ryder Hesjedal (2012): Victory in a snowstorm stage regarded as one of the hardest Giro stages of all time.
- Tom Dumoulin (2017): Stomach problems and time loss in a controversially discussed neutralisation phase.
- Chris Froome (2018): Dominant mountain ride and preparation for Giro victory.
Stelvio Records
- Over 15 Giro crossings since 1953
- 48 numbered bends on the Prato side
- 2,757 m summit elevation – reference value for Cima Coppi
The 48 Bends: Icons of the Prato Side
The serpentines from Trafoi are the visual trademark of the Stelvio. Each bend is numbered – from 48 at the foot to 1 at the summit. The tight switchbacks allow fans and photographers spectacular perspectives: the peloton winds like a colourful ribbon through the rock faces.
Characteristics of the Bend Section
- Bends 48–30: Moderate gradient, wooded section, field still compact.
- Bends 29–15: Gradient increases, first attacks, tight corners.
- Bends 14–5: Open rock face, wind and cold noticeable, selective pace.
- Bends 4–1: Summit ramp, maximum effort, emotional climax.
Prato Side Climb – 5 Phases
Fan Culture and the Experience On Site
Every Giro year, the Stelvio draws tens of thousands of fans to the roadside. Unlike the Dutch party atmosphere at the Alpe d'Huez or the Provençal starkness of the Mont Ventoux, the atmosphere on the Stelvio is shaped by alpine calm, Italian hospitality and deep respect for the altitude.
Where Fans Are Best Positioned
- Trafoi (approx. 1,650 m): Entry to the 48 bends – ideal for early action.
- Bend 20–10: Tightest serpentines, spectacular photos, high spectator density.
- Summit plateau: Huts, souvenirs, panorama – emotional climax.
- Bormio side upper section: Somewhat quieter, longer view of approaching groups.
Practical tips for route spectating – travel, supplies, safety – can be found under Route Spectating.
Weather at the Summit
At the summit, temperatures can fall below zero even in July. Snow, fog, ice and strong wind are possible at any time. Warm clothing, rain protection and sturdy footwear are essential. Information on extreme conditions can be found under Heat and Cold Management.
The Stelvio for Amateur Riders
The pass is one of the most sought-after destinations for amateur cyclists in Europe. Thousands complete the climb every year – often as part of organised events such as "Stelvio Bike Day" or on their own in summer when the road is open.
Checklist: Riding the Stelvio Yourself
- Fitness level: Complete at least 4–6 weeks of targeted mountain preparation
- Choose route: Prato side (48 bends, longer) or Bormio side (more even)
- Check gearing: Compact (34–28) or gravel bike with wide range
- Nutrition: Plan at least 60 g of carbohydrates per hour
- Weather check: Check mountain weather for South Tyrol the day before and on the morning
- Open status: Verify SS38 closure (winter) before travelling
- Descent technique: Check brake pads and tyres before the descent
- Emergency: Carry phone, cash and a wind vest in your jersey pocket
Tip for Amateur Riders
Anyone who wants to experience the summit without excessive time pressure should start early in the morning. This avoids afternoon thunderstorms and the strongest sun exposure on the lower section of the route.
Training Tips by Gradient
Comparison with Other Legendary Passes
The Stelvio stands alongside the great monuments of mountain cycling. While the Col du Tourmalet is considered king of the Pyrenees and primarily shapes the Tour de France, the Stelvio is the heart of the Giro – higher, longer and with a serpentine density unmatched worldwide.
Key Differences
- Altitude: Stelvio (2,757 m) exceeds Tourmalet (2,115 m) by over 600 metres.
- Bends: 48 numbered hairpin bends are unique; few other passes offer comparable serpentine density.
- Race history: Tourmalet = Tour de France; Stelvio = Giro d'Italia and the Coppi myth.
- Weather: Both face extreme conditions; Stelvio is even more prone to summer snow due to altitude.
- Fan culture: Stelvio tends towards alpine calm; Tourmalet Pyrenean vastness.
FAQ – Frequently Asked Questions about the Passo dello Stelvio
When is the Stelvio open for cyclists?
Typically from June to October, depending on snow conditions. The official SS38 winter closure usually ends in May or June.
Which side is harder – Prato or Bormio?
Both are HC-worthy. The Prato side is longer and famous for the 48 bends; the Bormio side is somewhat shorter but equally steep in peak sections.
How often does the Stelvio appear in the Giro?
Not every year, but regularly – roughly every two to three years, often as Cima Coppi or a decisive mountain test.
Can you ride the pass on Giro days?
On race days the road is closed. Fans position themselves hours before the peloton; cyclists use training days or days without race traffic.
Is a compact cassette system enough?
For trained amateur riders yes (34–28 or 36–32). Anyone unsure should choose the easiest available gearing – the summit ramp is merciless.
Related Topics
Last updated: 4 July 2026