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Colle della Colma from Rosazza

1
3.0
2 reviews | Elevation profile | 2 photos
Colle della Colma from Rosazza
Colle della Colma from Rosazza
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Elevation profile Colle della Colma from Rosazza

Statistics

Difficulty points 607
Length 4.8 mi
Average gradient 8.2%
Steepest segment 16.5%
Total ascent 2054 ft

Short recap

22 hairpin turns
#11 toughest climb of Biella
#14 most elevation gain of Biella
#16 longest climb of Biella
#3 average steepest climb of Biella
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Colle della Colma from Rosazza is a climb in the region Biella. It is 4.8 mi long and bridges 2054 ft of vertical ascent with an average gradient of 8.2%, resulting in a difficulty score of 607. The top of the ascent is located at 4915 ft above sea level. Climbfinder users shared 2 reviews of this climb and uploaded 2 photos.

Road name: Galleria Rosazza

3.0 by Fedebici
This is an automatic translation, the original language is: Italian.
Disastrous asphalt, with numerous pieces of gravel, especially after the Sanctuary of San Giovanni. From there, the really steep hairpin bends begin, so much so that an average of 8％ seems very little. The road is perfect for gravel. You arrive at the totally dark tunnel that is closed to cars but motorbikes often pass through. At the top before the tunnel, there is the possibility of refreshments at a trattoria on the right. The view becomes very beautiful as you descend on the opposite side ... read more

Photos (2)

Colle della Colma from Rosazza
Colle della Colma from Rosazza
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Reviews (2)

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MatteoM59
MatteoM59
9 Mo 3.0 via the Climbfinder app
This is an automatic translation, the original language is: Italian. Show original

Itinerary carried out at the end of August 2025, it is advisable to walk uphill because the road surface is in poor condition, at the moment a section has to be done on foot due to roadworks. Descent to Oropa panoramic and in good condition, if you continue the descent along the Tracciolino towards Agraglia you will add another pearl to your itinerary

Itinerario effettuato a fine agosto 2025, consigliabile la percorrenza in salita per manto stradale in cattive condizioni,al momento un tratto è da fare a piedi x lavori in corso. ripaga l'ambiente che è molto bello. Discesa su Oropa panoramica e in buone condizioni, se proseguite la discesa lungo il Tracciolino in direzione agraglia aggiungerete un'altra perla al vostro itinerario

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Fedebici
Fedebici
1 y 3.0
This is an automatic translation, the original language is: Italian. Show original

Disastrous asphalt, with numerous pieces of gravel, especially after the Sanctuary of San Giovanni. From there, the really steep hairpin bends begin, so much so that an average of 8％ seems very little. The road is perfect for gravel. You arrive at the totally dark tunnel that is closed to cars but motorbikes often pass through. At the top before the tunnel, there is the possibility of refreshments at a trattoria on the right. The view becomes very beautiful as you descend on the opposite side and the road also improves, especially after Oropa. The ascent makes the poor state of the road surface less noticeable, but it necessarily lowers the evaluation of the stretch.

Asfalto disastroso, con numerosi pezzi di ghiaia, specialmente dopo il Santuario di San Giovanni. Da lì iniziano i tornanti davvero pendenti, tanto che sembra proprio poco una media del 8％. La strada è perfetta da fare una gravel. Si arriva alla galleria totalmente buia chiusa alle auto ma passano spesso le moto. In cima prima della galleria possibilità di rifocillarsi presso una trattoria sulla destra. La vista diventa molto bella scendendo dalla parte opposta e anche la strada migliora specialmente dopo Oropa. La salita fa percepire meno lo stato pessimo del manto ma abbassa per forza la valutazione del tratto.

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Climbing times

5 mph 00:57:33
7 mph 00:40:45
9 mph 00:31:45
12 mph 00:23:51

Road surface condition

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Traffic

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Frequently Asked Questions

Colle della Colma can be cycled from 2 sides. Colle della Colma from Oropa is the most popular side, but the summit can also be reached via Colle della Colma from Rosazza.

Colle della Colma from Rosazza is a challenging ascent. For this type of climbing, we recommend mountain gearing, specifically a compact system. This means a small front chainring of 34 teeth, combined with a rear cassette where, depending on your level, strength, and experience, you choose a sprocket with 30, 32, or even 34 teeth. Remember that a smooth cadence is always more efficient!

Colle della Colma from Rosazza is a first-category climb: long and tough. Do not underestimate this climb. Many famous Tour de France cols fall into this category. Prepare for a long, challenging ride. Only well-trained riders will reach the top smoothly. Make sure you have a road bike with climbing gears and enough training; otherwise, it will be a struggle.

Colle della Colma from Rosazza is 4.8 mi long.

The average gradient of Colle della Colma from Rosazza is 8.2%.

Colle della Colma from Rosazza has a steepest segment with an average gradient of 16.5%.

The summit of Colle della Colma from Rosazza is at 4915 ft.

At a slow pace of 5 mph, it takes about 00:57:33 to climb Colle della Colma from Rosazza. At 7 mph the time is 00:40:45, and at 9 mph 00:31:45. For the fastest cyclists, 00:23:51 is an achievable time.

Colle della Colma from Rosazza is located in the region Biella in Italy.

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