For some, they are just massive piles of rock and endless mountain roads. For us cyclists, they are temples. Endless memories. We have personally ridden almost all of them over the past decade. These are the Tour de France alpine passes where ordinary people become legends, where lungs burn from the lack of oxygen, and where every single turn is etched into memory with pure suffering and ultimate euphoria.
If you are one of the beautiful madmen who love to fight gravity and want to feel the raw, unfiltered alpine grind in your legs, this is your bucket list. We have personally ridden and conquered the most famous and wild passes that shaped the history of the Tour de France and the legendary Route des Grandes Alpes.
Pack your spare tubes, gear down, and let’s climb.
Tour de France Alpine Passes
The Giants of Savoy
The 2,000-meter threshold and the Italian wind. Savoy is a cycling classic. This is where the air thins out, climbs feel endless, and snow walls flanking the road in June are completely standard.
Col de l’Iseran
🏔️ 🚴 2,764 m a.s.l. | The Undisputed King of Alpine Passes
Forget the Stelvio, forget the Galibier. Col de l’Iseran is the highest paved mountain pass in the entire Alps.
- Climb Stats (from Bourg-Saint-Maurice): A brutal 47.5 km (the longest climb in France!), average gradient 4.1%, elevation gain 1,995 m.
- The Rider’s Perspective: The northern approach from Bourg-Saint-Maurice is an endurance film. The first two-thirds are a mental grind through dark tunnels around Tignes. The real magic begins in Val d’Isère. The final 15 kilometers are pure cycling gold—raw mountain peaks, thin air that makes your eyes dance, and profound silence. On this mountain, you realize exactly how small you are.
Col du Mont Cenis
🏔️ 🚴 2,083 m a.s.l. | The Gate to Italy and the Turquoise Lake
Situated on the French-Italian border, this pass was once crossed by Napoleon, but for us, it is one of the most visually stunning routes in the region.
- Climb Stats (from Lanslebourg): 10 km, average gradient 7%, elevation gain 680 m.
- The Rider’s Perspective: The climb from Lanslebourg is pleasant, nicely shaded by pine forests, and passes by quickly. The real reward awaits at the summit. Suddenly, a vast alpine plateau opens up before you, dominated by the turquoise waters of Lac du Mont Cenis, framed by 3,000-meter peaks. If you are riding a gravel bike, take the short detour to Col du Petit Mont Cenis (2,183 m a.s.l.)—where the asphalt ends and gravel paradise begins.
Col du Granier
🏔️ 🚴 1,134 m a.s.l. | The Green Chartreuse Gates
Though it doesn’t boast the elevation of its 2,000-meter brothers, the Granier in the Chartreuse massif is a steep, intense, and classic northern Alps climb.
- Climb Stats (from Chambéry): 15.3 km, average gradient 5.6% (with sections hitting 9%), elevation gain 830 m.
- The Rider’s Perspective: Granier is the perfect leg-opener. Unlike the scorched, rocky passes of the south, here you will enjoy the shade of dense forests, sheer limestone cliffs, and crisp mountain air. It’s the perfect early-morning ride before the summer sun starts baking the asphalt.
- Read Climb Legendary Monte Cenis
Col du Glandon a Croix de Fer
🏔️ 🚴 Col du Glandon (1924 m n.m.) a Col de la Croix de Fer (2067 m n.m.)
In fact, these mountain passes are legends of the Tour de France. The Croix de Fer has appeared on the “Old Lady” more than 20 times (making its debut in 1947), and the Glandon has been crossed more than 15 times.
- Read more Cycling Col du Glandon & Croix de Fer
Mont du Chat
🏔️ 🚴 1,496 m above sea level | A brutal climb on par with Mortirolo
The Col du Mont du Chat has gone down in Tour de France history as one of the most feared climbs of all time, even though it appears only rarely on the “Old Lady’s” itinerary. Like the Col du Mollard, it isn’t very high but is brutally steep.
- You’re in for a 14.4 km continuous climb with an elevation gain of over 1,220 meters and an average gradient of 9.5%. With its brutality, zero opportunity for rest, and constant pressure on the pedals, this climb is in many ways reminiscent of the dreaded Italian Mortirolo.
- The downhill rider’s nightmare: The descent from Mont du Chat is legendary in the cycling world. The road is narrow, the asphalt is unpredictable, and the turns close in so sharply that your brake rotors will be screaming for help.
- Report from the climb up Mont du Chat
Iconic Arenas of Briançon
👑 The heartland of French road cycling. The area where the Tour de France is won or lost, and where thousands of cyclists from all over the world converge every summer.
Alpe d’Huez
🏔️ 🚴 1,860 m a.s.l. | 21 Hairpins into Cycling Heaven
It is neither the highest nor the steepest pass in the Alps, but it is, without a doubt, the most famous natural amphitheater in the world.
- Climb Stats: 13.8 km, average gradient 8.1%, elevation gain 1,135 m.
- The Rider’s Perspective: Each of the legendary 21 hairpin turns is named after a historic Tour de France stage winner. The worst part is the very beginning. The first four hairpins pitch at a brutal 10%+, meaning you must pace yourself immediately or face an agonizing climb.
- Read 🔥 Alpe d’Huez: The Queen Stage of the Tour de France
Col du Galibier
🏔️ 🚴 2,642 m a.s.l. | The Brutal Roof of the Tour de France
When the Tour de France needs to truly break the riders, it sends them up the Galibier.
- Climb Stats (from the North via Télégraphe): 34.8 km (total), average gradient 5.5% (with final kilometers hitting 10%), elevation gain 2,120 m.
- The Rider’s Perspective: Climbing the Galibier is an epic journey. The final 8 kilometers above the tree line are a pure mental fight against the headwind and high altitude. Spotting the iconic monument dedicated to Henri Desgrange just below the summit is the ultimate sign that you have nearly made it.
- Read Rosé on Col du Galibier: cycling the Mythical Giant
Col d’Izoard
🏔️ 🚴 2,360 m a.s.l. | Medieval Solitude in Casse Déserte
- Climb Stats (from Guillestre): 15.9 km, average gradient 6.9% (maxing out at 10%), elevation gain 1,095 m.
- The Rider’s Perspective: The defining moment occurs about 2 kilometers from the top. The road spits you out into the Casse Déserte—a barren wasteland of weathered rock formations and massive scree slopes. It is a monumentally quiet, almost sacred place, marked by a memorial to Fausto Coppi and Louison Bobet.
- Read 👉 Climb Col d’Izoard: The Giant of the Alp
Col de la Madeleine
🏔️ 🚴 1,993 m a.s.l. | A Relentless Grind Under Mont Blanc
- Climb Stats (from La Chambre): 19 km, average gradient 8%, elevation gain 1,522 m.
- The Rider’s Perspective: The southern approach from La Chambre is pure grit. The climb simply refuses to let you find a flat section, consistently hovering between 8% and 9%. The reward at the summit is an unparalleled view of the massive Mont Blanc range.
Col d’Agnel
🏔️ 🚴 2,744 m a.s.l. | The Wild, Silent, and Brutal Giant
Col d’Agnel (Colle dell’Agnello) lies on the Italian-French border and is the third-highest paved pass in the Alps. It is a forgotten world of immense peaks and profound silence.
- Climb Stats (French side): 20.5 km, average gradient 6.6% (the final 5 km consistently hold above 9%), elevation gain 1,350 m.
- The Rider’s Perspective: Agnel is breathtakingly remote. The route winds through the nearly deserted Queyras valley. The final kilometers are incredibly tough, with gradients hovering around 10% in high altitude where the headwind tests your resolve. At the summit, only a simple sign reading France/Italia awaits, along with the feeling of being at the end of the world.
The Wild and Scorched South
🔥 The road to the sea via Mercantour. The Southern Alps are a completely different animal. They are dry, they smell of wild lavender and thyme, the rocks have a deep reddish tint, and the Mediterranean sun beats down with intense heat. This is where the real connoisseurs ride.
Cime de la Bonette
🏔️ 🚴 2,802 m a.s.l. | The Highest Paved Loop in France
While the actual Col de la Bonette pass lies at 2,715 meters, French road engineers built a small loop around the Cime peak just to snatch the title of the highest paved road in France from the Col de l’Iseran.
- Climb Stats (from Jausiers): 24 km, average gradient 6.6%, elevation gain 1,589 m.
- The Rider’s Perspective: This is pure moonscape territory. After leaving the valley, you enter a barren world with absolutely no shade. The route takes you past the abandoned military ruins of Camp des Fourches, which feels like a high-altitude ghost town. The final kilometer circling the peak ramps up to over 15%, and at 2,800 meters, you’ll feel like you’re breathing through a straw. But the 360-degree view of the Southern Alps is majestic.
- Read Climb to Col de la Bonette
Col de la Moutière
🏔️ 🚴 2,454 m a.s.l. | The Secret Gravel Shortcut of the Alps
For those seeking a truly wild and off-the-beaten-path experience, Moutière is the holy grail. This pass lies right next to Bonette, but is almost completely abandoned.
- Climb Stats: Approx 20 km from Jausiers, average gradient 6-7% (with a rugged gravel finish).
- The Rider’s Perspective: The road is narrow, and the asphalt is rough. At the summit, a legendary unpaved military gravel road connects you back to the Bonette route. If you love raw nature without any traffic, Moutière will blow your mind.
Col de la Lombarde
🏔️ 🚴 2,351 m a.s.l. | A Rugged Border Hidden in the Rocks
Lombarde connects the French resort of Isola 2000 with the Italian Valle Stura. It is a long, winding, and incredibly charismatic pass.
- Climb Stats (Italian side): 21.3 km, average gradient 6.8% (with sections hitting 10%), elevation gain 1,447 m.
- The Rider’s Perspective: The Italian side is much wilder than the French side. The road is extremely narrow, the asphalt is rough, and you climb through deep forests that eventually turn into rocky alpine meadows. It tests your pace constantly with tight hairpins, making you feel like you are on a secret military route.
Col de Vars
🏔️ 🚴 2,109 m a.s.l. | The Rugged Link Between North and South
Vars serves as a vital, yet deceptively tough connection between the Queyras valley and the Ubaye valley. The Tour de France loves it for its unpredictability.
- Climb Stats (from Guillestre): 19 km, average gradient 5.7% (but the middle section stubbornly holds at 8-9%), elevation gain 1,111 m.
- The Rider’s Perspective: Vars knows how to catch you off guard. It starts gently, but once you pass the ski resort of Vars, the road straightens out into steep, relentless ramps with a frequent headwind. It’s a climb that doesn’t look terrifying on paper, but your legs will feel every single meter.
Col de Allos, Champs, Cayolle
The Southern Murder Loop: Allos, Champs, and Cayolle
These three passes form a legendary circular route out of Barcelonnette that local cyclists ride as one brutal, spectacular day-long epic. The profile resembles a serrated steak knife, and it will test your limits to the absolute maximum.
- Col d’Allos (2,240 m a.s.l.): One of the oldest and narrowest mountain roads in the Alps. The climb out of Barcelonnette follows a narrow strip of tarmac carved directly into the cliffside high above a deep canyon. It is so narrow that two cars can barely pass each other, making the bike ride incredibly dramatic.
- Col des Champs (2,087 m a.s.l.): Perhaps the least-known, yet most magical pass of the three. The southern approach is steep, quiet, and rough, with old tarmac winding through ancient larch forests. You are far more likely to encounter marmots and cows than a single car. Pure cycling romance.
- Col de la Cayolle (2,326 m a.s.l.): For many, this is the most beautiful pass in the Southern Alps. The road winds through the Mercantour National Park alongside the turquoise Bachelard torrent. The climb is long (29 km from Barcelonnette), but the gradient is incredibly pleasant and steady (around 4-5%), passing through narrow gorges, rock tunnels, and emerging onto alpine meadows home to wild chamois and mountain goats.
- Read Allos, Champs, and Cayolle Climb over three two-thousanders
Sacred Shrines Outside the Main Ridge
Mont Ventoux
🏔️ 🚴 1,912 m a.s.l. | The Wind-Swept White Beast of Provence
Although Ventoux lies isolated from the main Alpine ridge, it is a mythical place of suffering for cyclists. The “Giant of Provence” is notorious for its extreme mistral winds and blistering heat.
- Climb Stats (from Bédoin): 21.5 km, average gradient 7.5% (the last 15 km do not drop below 9%), elevation gain 1,610 m.
- The Rider’s Perspective: The first section through the forest is humid and stifling, where the air barely moves. The real drama begins at Chalet Reynard, where you enter the legendary white limestone desert. Nothing surrounds you but white glare and the red-and-white weather station at the summit, which seems eternally out of reach. Don’t forget to stop at the memorial dedicated to Tom Simpson, who lost his life here in 1967.
Col du Tourmalet
🏔️ 🚴 2,115 m a.s.l. | 🍉 Pyrenean Bonus
Although it is located in the Pyrenees, omitting the Tourmalet would be a sin. It is the most climbed mountain in Tour history, making its debut way back in 1910.
- Climb Stats (from Luz-Saint-Sauveur): 19 km, average gradient 7.4%, elevation gain 1,404 m.
- The Rider’s Perspective: The Tourmalet is a legend. Passing the silver monument of “The Giant” (Géant du Tourmalet) at the summit is a spiritual moment for any cyclist. The climb is notorious for sudden weather changes, where baking summer heat can dissolve into a dense, wet fog within minutes.
