4.2
(13)
446
riders
04:27
68.5km
2,020m
Road cycling
Cycle the Ascent to Passo del Mortirolo from Tirano, a difficult 42.6-mile route with 6632 feet of elevation gain.
Last updated: February 26, 2026
Tips
Temporary access restrictions
Includes segments with temporary access restrictions. Check ahead to confirm restricted segments are open to the public.
After 10.5 km for 3.89 km
After 16.4 km for 3.87 km
Waypoints
Start point
Parking
Get Directions
6.21 km
Highlight • Monument
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13.7 km
Highlight • Mountain Pass
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45.2 km
Highlight • Mountain Pass
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66.7 km
Highlight • Lake
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68.5 km
End point
Parking
Way Types & Surfaces
Way Types
34.3 km
27.8 km
4.25 km
2.17 km
Surfaces
63.1 km
5.48 km
< 100 m
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Elevation
Highest point (1,860 m)
Lowest point (400 m)
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Weather
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Wednesday 8 July
31°C
16°C
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This route was planned by komoot.
This route is classified as difficult and is considered one of the hardest cycling climbs in the world, often ranked as "Super Hors Catégorie". It demands very good fitness and is an extreme test of endurance, both physically and mentally. The gradients are relentless and irregular, with many sections exceeding 18-20%.
No, this route is not suitable for beginners. The Passo del Mortirolo is renowned for its brutal difficulty and unrelenting steepness, requiring very good fitness and experience. Even seasoned cyclists often need the lightest possible gearing to complete it without stopping.
The road surface is mostly well-paved, though some sections retain the narrowness of its origins as a goat track. The climb is characterized by highly irregular and relentless gradients, with many kilometers averaging 15% and ramps reaching or exceeding 18-20%. Even the numerous hairpin bends offer little respite from the steep inclines.
While the focus of this climb is primarily on the physical challenge, you will pass by significant landmarks. These include the Marco Pantani Monument on bend 11, the famous Foppa Pass: "Mortirolo" itself, and the Aprica Pass. You'll also pass the Sernio Reservoir.
Unlike some other Alpine passes, the Mortirolo is not primarily celebrated for sweeping panoramic views. For much of the ascent, you'll be immersed in dense woodland, which can feel quite isolated. While there are occasional breaks in the forest offering glimpses over the Valtellina valley, truly expansive vistas are rare until closer to the summit.
The best time to cycle this route is typically from late spring to early autumn, generally June through September, when the pass is clear of snow and weather conditions are most favorable. Always check the local weather forecast before you go, as mountain weather can change rapidly.
Tirano serves as a common starting point for routes incorporating the Mortirolo. You can usually find public parking in and around the town center. Specific parking areas for cyclists are not explicitly designated, but general town parking should be available. Consider arriving early, especially during peak season, to secure a spot.
No, there are no specific permits or entrance fees required to cycle the Passo del Mortirolo. It is a public road, and access is generally free.
This route is designed for race biking on public roads. While dogs are generally allowed in public spaces, bringing a dog on a demanding road cycling ascent like the Mortirolo is not practical or recommended due to the extreme physical exertion required and the nature of road cycling.
Yes, sections of this route overlap with or run alongside several other paths. You will encounter parts of the Trekking delle malghe, Sentiero Valtellina, and Tour del Mortirolo, among others. Other intersecting paths include the SICAI Ciclo and Ciclovia Karolingia.
Given the extreme difficulty, you should bring a road bike equipped with the lightest possible gearing (e.g., 34x34 or even lower) to manage the steep gradients. Essential items include plenty of water, energy gels or bars, a repair kit, appropriate cycling apparel for varying mountain weather, and a helmet. A GPS device is also highly recommended for navigation.
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