Passo San Marco - Morbegno Bike Climb - PJAMM Cycling

34.3
PDI
16.1 mi
DISTANCE
5,579 ft
GAINED
6.5 %
AVG. GRADE

FULL CLIMB STATS

INTRO

Passo San Marco (Morbegno) is a long, steady climb up the Bergamo Alps from the Valtellina town of Morbegno in Lombardia, Italy. From a starting elevation of 866 feet, the road (SP 8) climbs 16 miles (25.8 km) and gains 5,579 feet to the 1,993-meter pass at a manageable 6.5% average grade - the steepest stretches, near the final switchbacks, touch just over 9%. The road follows a route first built by the Republic of Venice in the late 16th century to reach the Grisons without crossing the rival Duchy of Milan; the stone Ca San Marco rifugio near the summit dates from that era. After bending north around mile 4.5, the road runs for three miles along the eastern rim of a deep canyon, with dramatic above-treeline switchbacks that are as striking looking back down as they are climbing up. The one real distraction is a line of high-voltage power lines shadowing much of the ascent. The Giro d'Italia has climbed San Marco four times - in 1986, Greg LeMond lobbied to keep the climb on the route after organizers considered scrapping it over snow, then crested it stride for stride with Roberto Visentini; in 2007 it set up Stefano Garzelli's stage win into Bergamo. It's a seasonal road, typically closing with the first snow in November and reopening by May.

PLAN YOUR ROUTE

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Passo San Marco from Morbegno runs 16 miles (25.8 km) and gains 5,579 feet at a 6.5% average grade - a long, steady grinder rather than a leg-breaker. The lower miles out of Morbegno hold in the 6-7% range as the road climbs through the canyon toward Albaredo (km 10). The final few kilometers above treeline are the toughest part of the climb, with the steepest kilometer around 9.4% and brief quarter-mile pitches just over 10% through the closing switchbacks. There's no single brutal ramp here - the challenge is the sustained length and the more than 1,700 meters of total elevation gain.
Roadway: SP 8 is paved the entire way and in excellent condition per rider reports through 2025 - the road is also closed to heavy trucks, so surface wear stays lower than on a typical Alpine route. It's a seasonal road that closes with the first snow, typically from November into spring; check Provincia di Sondrio's road-status page before a shoulder-season ride. The climb also hosts an organized cycling day each spring ("Enjoy Stelvio San Marco Day") when a stretch near the top closes to cars for a few hours - check the current year's schedule if riding in late May.

Traffic: Traffic is light for a road connecting two valleys - most vehicles are local, and the truck ban keeps things quieter than routes like the nearby Stelvio. The steady, moderate grade means there's rarely a backup behind slow-moving traffic.

Parking: Morbegno is a real working town (pop. approx. 12,000), not a resort, so there's no dedicated cycling lot - riders typically leave a car on the street near the base of SP 8 at the first tornante, close to the town center.
Morbegno is the largest town in the lower Valtellina and has full services - grocery stores, cafes, and bike shops - making it an easy place to fuel up or fix a mechanical before the climb. Past Albaredo (km 10) there are no further services until the pass, so top off bottles in town. The grade is moderate throughout (6.5% average), so standard compact gearing is enough for most riders; save some in reserve for the steeper switchbacked kilometers near the top. Above treeline the road is exposed, so pack a wind layer for the pass and the descent even on a warm day down in Morbegno.
Before heading out on any cycling adventure check out our Things to Bring on a Cycling Trip and use our interactive check list to ensure you don't forget anything.
Morbegno is the traditional home of Bitto, Valtellina's celebrated mountain cheese, and hosts the Mostra del Bitto each October (running since 1907), when the town center fills with tastings, polenta taragna, and cheese from the surrounding valleys. Spring through early autumn is the riding season - the pass itself is closed through the winter. For a tougher second climb in the same area, Prato Maslino above nearby Berbenno di Valtellina is a short, brutally steep dead-end worth a look if you're staying multiple days. See our Routes in the Area tool for other climbs within reach of Morbegno.

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MEMBER RATING

Difficulty: Strenuous
5/5
Road
5/5
Traffic
4/5
Scenery

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Jun 8, 2026
difficulty: Strenuous
scenery: 4
traffic: 5
road: 5
Jun 8, 2026
scenery: 4
traffic: 5
road: 5
Not a lot of respite on this climb. The '12 miles between 5% and 10%' is not very helpful, even if mathematically correct, because most is at >8%... Great view at the (mostly deserted) summit without a refuge.
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CLIMB SUMMARY

Passo San Marco (Morbegno)


Such a beautiful climb, particularly after gradually bending north around mile 4.5 / kilometer 7.2 and travelling along the eastern (left) side of a deep canyon for 3 miles / 4.8 km.   There are several big switchbacks along this route, one set while leaving town which offer some views through the trees of Morbegno below, then some very dramatic above-treeline switchbacks that are a spectacular sight when looking back and down on them.  

We documented Passo San Marco from Morbegno (northern route) which is 7.8% average grade, 16/25.7 miles/km gaining 5,590’/1,705m.  Another challenging climb is San Marco from Olmo Al Brembo - south  (12/19 distance, 7% average grade, gaining 4,723’/1,440m;  Map , Strava Segement)

While Passo San Marco (Morbegno) is never terribly steep, it is a grinder (in a good way) with a steady grade of 7-9% throughout.    The one detraction from this otherwise pristine climb are the many high voltage power lines that run from the summit all the way to Morbengo and are visible most of the climb.  

IMG_9232.JPG    IMG_9214.JPG                 

                                       Strada Procinviale 8                               Not one of the Italian climb legends, but worth the effort!

IMG_9239.JPG    IMG_9248.JPG

                Views from initial tornanti down to Morbegno                                  Those darn power lines!              

IMG_9279.JPG    IMG_9283.JPG Beginning the climb up the canyon  mile 5/km 8  (Valle-Campoerbolo)         IMG_9302.JPG   IMG_9301.JPG

      View north from Albaredo Per San Marco mile/km 6/9.6                     View south - towards the pass

 IMG_9353.JPG   IMG_9336.JPG

IMG_9375.JPG    IMG_9411.JPG

                                That’s where we’re headed!                                             Dramatic tornanti last 2.5/4 mile/km

IMG_9417.JPG   IMG_9426.JPG

                                                                                        It’s a wrap!                                                    

                   

Giro History

Year

Stage

Stage Winner

Country

2007

14

Stefano Garzelli

Italy

1988

13

Tony Rominger

Denmark

1987

13

Roberto Visentini

Italy

1986

16

Rodriguez Munoz

Spain

2007 Stage 14 Report (Wikipedia):

26 May 2007 – Cantù to Bergamo, 192 km (119 mi)

The first 85 km (53 mi) of this stage were flat, but two categorized climbs followed. The second-category Passo di San Marco and the third-category La Trinità-Dossena had a 20 km (12 mi) descent between them. Though a flat stretch followed to the finish, it was not likely that any sprinters would be present in the leading group to contest the stage.

The morning breakaway numbered eleven. During the flat stretch before the Passo di San Marco climb, Stefano Garzelli tried to use his team to soften the main field so he could attack and bridge up to the leaders, but team Liquigas, working for race leader Danilo Di Luca, nullified the move.

The group thinned after cresting the climb, leaving only Iván Parra, Paolo Bettini, and Fortunato Baliani just less than two minutes ahead of the pink jersey group, which contained all of the race's overall favorites. Garzelli and teammate Massimo Codol came free of this group on the ascent of La Trinità-Dossena and drew Gilberto Simoni and the powerful Astana duo of Eddy Mazzoleni and Paolo Savoldelli with them. The three breakaway riders were able to stay with them, forming a leading group of seven, after Codol dropped after doing some strenuous pacemaking. They built a 30 second advantage over the pink jersey group, as Liquigas was spent from their earlier effort to keep the race together. They kept their advantage over the other race favorites at that level for most of the stage, contesting a sprint finish among themselves 38 seconds ahead of Di Luca in eighth. Simoni opened the sprint first, with 250 m (820 ft) to go to the finish line, but as is so often the case, the first to go was not the winner. Garzelli passed him up with 60 m (200 ft) left and won his first Giro stage in three years. Simoni moved up from eighth to fifth after the stage, and several time gaps tightened with the day's results.”

1986 - BikeRaceInfo.com - 1986 Giro

“Could Saronni keep his lead in the Alps? Stage fourteen was the first test and after the hilltop finish in Sauze d’Oulx, Visentini gained another 21 seconds on Saronni, while Baronchelli lost a half-minute.

Torriani wanted to cancel the ascent of the San Marco pass, scheduled to be the major climb before the finish at the ski town of Foppolo, saying that with snow on the road it would be a difficult climb. This from the man who engineered stages like the famous Monte Bondone climb in 1956, where dozens of frozen riders, including the maglia rosa, quit in icy misery. LeMond, smelling a fix coming that would lock in Saronni’s lead, got ugly. Arguing it was one of the few chances for him and the other climbers to challenge Saronni, he raised enough stink that Torriani kept the climb. It was good for Torriani and the Giro that the ascent was retained because it was truly memorable.

LeMond and Visentini hit the base of the climb at full gas. The peloton exploded as the contenders scrambled to get up to the flying pair. At the crest it was still LeMond and Visentini at the front, but Baronchelli, Pedro Muñoz, Claudio Corti and Franco Chioccioli had dragged themselves up to the duo. Further back, Saronni and Moser were already two minutes in arrears.

On the ascent to Foppolo, LeMond and Muñoz separated themselves from the other four with the Spaniard winning the stage. Twenty seconds later Visentini came into town, Baronchelli arriving another minute later, Moser and Saronni needing still another minute to arrive. Visentini was in pink and Moser was in high dudgeon. Moser and his director Gianluigi Stanga accused Baronchelli of betraying his teammate Moser by selling his services to Visentini.”