Alto de Letras is the longest road climb in the world
Colombia, south-america
78.9 km
3,692 m
moderate
Year-round
Get ready for Alto de Letras, one of the most legendary and grueling climbs in Colombia! Situated high in the Andes, straddling the Tolima and Caldas departments, this road is a must-do for any adventurous traveler.
Nicknamed "Letras", this fully paved road, part of Ruta Nacional 50, links Manizales and San Sebastián de Mariquita, offering an epic journey for those brave enough to take it on.
Prepare to be amazed as the landscape transforms around you. The changing scenery, climate, crops, and even animals create a truly unique experience. Keep your camera ready for the beautiful, ever-evolving views. Heads up, though: this route can get busy, so an early start is a good idea.
Starting from San Sebastián de Mariquita, you'll be tackling a staggering 78.9 km (49 miles) with an elevation gain of 3,220 meters. The average gradient is around 4%, but don't let that fool you – you'll hit some steep sections of 11% or 12% in places!
Often called the longest road climb in the world, Alto de Letras is a favorite among cyclists, both amateur and pro, and has been a part of the Vuelta a Colombia for years. Starting in the subtropical heat of San Sebastián de Mariquita at 468 meters and climbing all the way up to an arctic 3,692 meters, this is one South American adventure you won't soon forget!
Where is it?
Alto de Letras is the longest road climb in the world is located in Colombia (south-america). Coordinates: 4.1326, -74.6866
Road Details
- Country
- Colombia
- Continent
- south-america
- Length
- 78.9 km
- Max Elevation
- 3,692 m
- Difficulty
- moderate
- Coordinates
- 4.1326, -74.6866
Related Roads in south-america
extremeWhere is the road to Portezuelo Sairécabur?
🇨🇱 Chile
Okay, picture this: You're blazing a trail northeast of San Pedro de Atacama, right on the knife's edge of the Chilean/Bolivian border. You're heading to Portezuelo Sairécabur, an old, forgotten mining route punching way up into the Andes. Seriously, this isn't your Sunday drive—it's a raw, off-road odyssey into one of the most desolate corners of South America. This "road," officially the B-221, kicks off near Laguna del Inca o del Portillo, but don't expect pavement. Think loose gravel, deep sand, and gnarly volcanic rock. This is 4x4 territory, no question. We're talking a relentless climb, averaging around a 7% gradient, that’ll have your engine screaming for mercy thanks to the thin air. Oh, and did I mention the 15 super-tight hairpin turns? One wrong move in that loose sand, and you're stuck. Be ready for the "road" to vanish under fresh snow or shifting dunes at any moment. And the altitude? Whoa, buddy, it’s a killer. We're talking 5,541 meters (18,179 feet)! Seriously, you NEED to acclimatize in San Pedro before even thinking about this. Otherwise, altitude sickness can ruin your trip – or worse. Expect to move in slow motion as the air robs you of energy, and your brain feels like it’s wading through peanut butter. Plus, your engine is going to lose a ton of power, so low gear and a super-chill driving style are your best friends. The weather? Forget about it. Harsh doesn't even begin to cover it. One minute you're basking in sunshine, the next you're getting hammered by a blizzard. It's almost always windy and freezing, even in summer. Summit temps? Rarely above zero. So, check the forecast, but pack for Armageddon: thermal gear, emergency blankets, and enough fuel to keep your heater blasting if you get stranded. Bottom line: Portezuelo Sairécabur is an epic adventure, but respect the mountain, and come prepared.
hardWhere does Road BR-319 start and finish?
🇧🇷 Brazil
Ready for a wild ride? Check out the BR-319, a Brazilian highway that's not for the faint of heart! This 857km (532 miles) stretch connects Manaus (the bustling capital of Amazonas) to Porto Velho (the capital of Rondônia) deep in the Amazon. Built in the '70s to open up the rainforest, the BR-319 crosses through Humaitá, Lábrea, and other small cities, offering a glimpse into remote Amazonian life. It opened in 1973, but by 1988 it was impassible. Repairs started in 2008. So, is it drivable? Usually, yes, but during the rainy season, it can turn into a muddy mess. Expect a mix of asphalt, gravel, and sand, plus some serious potholes and missing guardrails to keep you on your toes. Be warned: this isn't your average road trip. Environmental groups are concerned about the impact of rebuilding the highway on deforestation. The original construction wasn't exactly state-of-the-art, built on swampland and prone to floods that washed away bridges. These days, most cargo goes by boat. If you're brave enough to attempt it, be prepared to camp rough and experience the raw beauty (and challenges) of the Amazon. Don't miss the abandoned Viaduct Petrobras for a surreal photo op in the middle of the jungle!
hardLago Zongo
🇧🇴 Bolivia
Okay, adventure seekers, listen up! Lago Zongo in Bolivia's La Paz Department is calling your name, but only if you're up for a serious off-road challenge. We're talking a lung-busting climb to 4,776m (15,669ft) in the heart of the Cordillera Real of the Andes. The road? Well, let's just say it's not for the faint of heart. Think gravel, rocks, and a whole lotta "tippy and bumpy" moments, plus hairpin turns that'll test your driving skills. Definitely a 4x4 situation, and honestly, if unpaved mountain roads aren't your thing, maybe skip this one. Snow can shut this bad boy down anytime, so check conditions before you go! Oh, and did I mention the drop-offs? Seriously, don't look down if you're scared of heights. This trail is STEEP, and if it's wet, you're looking at some serious mud-slinging. The lack of oxygen at this altitude is real, too. Be prepared for potential altitude sickness — most people start feeling it below the summit. But hey, if you're looking for an unforgettable, adrenaline-pumping drive with views that'll blow your mind, Lago Zongo might just be your next adventure.
extremeWhy is it called Lastarria Volcano?
🇨🇱 Chile
Okay, picture this: you're straddling the border between Chile and Argentina, smack-dab in the Central Andes. Looming large is Volcán Lastarria, a seriously impressive stratovolcano named after some 19th-century Chilean brainiac, José Victorino Lastarria. This isn't your average Sunday drive, folks. The road, if you can even call it that, claws its way up the volcano to a lung-busting altitude that puts it in the running for one of the highest roads in Argentina. We’re talking serious elevation here. The scenery? Think desolate, otherworldly, and jaw-dropping. You'll be surrounded by intense yellow sulfur deposits thanks to the volcano's constant, powerful fumaroles – it's been puffing away for over 70 years. But be warned: this beauty comes with a bite. The "road" is basically a set of unmarked mining tracks carved out for sulfur extraction. Expect loose volcanic ash, sharp obsidian rocks, and sneaky sand drifts just waiting to swallow your tires. High-clearance 4x4? Non-negotiable. Satellite imagery? Your new best friend. And did I mention the altitude? The air is thin, your engine's gonna whine, and those sulfur gases? They're not exactly aromatherapy. Plus, you're miles from civilization. If something goes wrong, you're on your own. Pack accordingly—we’re talking supplemental oxygen, gas masks, and enough supplies to survive a zombie apocalypse. This ain't for the faint of heart, but for the ultimate adventure, Lastarria delivers.