Karakoram Highway: The World's Highest Paved Road

The Karakoram Highway (KKH) is not just a road — it's a monument to human determination. Carved through the world's most rugged mountain range over 20 years at the cost of nearly 900 workers' lives, this 1,300-kilometer engineering marvel connects Kashgar in China's Xinjiang region with Islamabad in Pakistan. It crosses the Khunjerab Pass at 4,693 meters — the highest paved border crossing on Earth — and passes within sight of K2, the world's second-highest mountain. Here's everything you need to know about one of the planet's most spectacular road trips.

The Route: Kashgar to Islamabad (or Reverse)

The KKH officially begins in Kashgar and runs south through the Pamir and Karakoram ranges into Pakistan's Gilgit-Baltistan region before descending to Islamabad. The journey takes 3-5 days with stops, depending on road conditions and border crossing logistics. Key distances along the route:

Kashgar → Tashkurgan (290 km, 5-6 hours): The Chinese section climbs steadily through the Pamir foothills, past Karakul Lake with the towering Muztagh Ata (7,546m) as backdrop. The road is well-paved and maintained on the Chinese side.

Tashkurgan → Khunjerab Pass → Sost (220 km, 4-5 hours): The border crossing itself is at 4,693 meters elevation. After clearing Pakistani immigration at Sost, the landscape transforms dramatically — from the high-altitude Pamir plateau to the lush, green Hunza Valley.

Sost → Karimabad (Hunza) → Gilgit (270 km, 6-8 hours): The most scenic section. The road hugs the Hunza River as it winds past terraced orchards, ancient forts (Baltit and Altit), and views of Rakaposhi (7,788m). Gilgit is the regional capital and a good overnight stop.

Gilgit → Besham → Islamabad (650 km, 12-14 hours over 2 days): The southern section descends through the Indus Valley, past the meeting point of the Karakoram, Himalaya, and Hindu Kush ranges, ending in the relative flatlands near Islamabad.

The Eighth Wonder of the World

Building the KKH was an engineering challenge of staggering proportions. Construction began in 1959 as a joint China-Pakistan project. Workers battled landslides, avalanches, and sub-zero temperatures while carving a roadbed through solid rock faces that plunged over 1,000 meters to the river below. The Chinese section alone required 15 million cubic meters of earthwork. An estimated 810 Pakistanis and 82 Chinese workers lost their lives during construction — a memorial at the Khunjerab Pass honors their sacrifice.

The result is a road that twists through 92 bridges, countless hairpin turns, and stretches so narrow that two vehicles can barely pass. It's been called the "Eighth Wonder of the World" — and for anyone who's driven it, the title feels earned.

Must-See Stops Along the Way

Karakul Lake (3,600m): About 200 km south of Kashgar, this high-altitude lake sits at the foot of Muztagh Ata. On a clear day, the mountain's perfect cone reflects in the turquoise water. Kyrgyz herders bring their yaks and camels to graze the surrounding pastures.

Tashkurgan Stone Fortress: This 2,000-year-old fortress was the last stop on the Chinese side of the ancient Silk Road before caravans crossed into Central Asia. The ruins sit on a plateau overlooking the modern town, with the snow-capped Pamirs forming an epic backdrop.

Khunjerab Pass (4,693m): The border itself is an experience — thin air, dramatic vistas, and a sense of standing at the top of the world. The pass is usually snow-free from May to November; the rest of the year, it may be closed. Bring your passport and visa paperwork in order.

Hunza Valley: The crown jewel of the Pakistani section. The Hunza Valley is a green oasis between towering peaks, known for its apricot orchards, longevity of its residents (Hunza people are famous for living past 100), and jaw-dropping mountain views. Visit the 700-year-old Baltit Fort, walk through the apricot trees in Karimabad, and try Hunza's legendary walnut cake.

Rakaposhi Viewpoint: At 7,788 meters, Rakaposhi rises nearly 6,000 meters from the valley floor in a single, uninterrupted sweep — one of the most dramatic mountain views on the planet. There's a well-marked viewpoint about 15 km north of Gilgit.

Best Time to Drive the KKH

The Karakoram Highway is only fully open from May through November. The Khunjerab Pass typically closes from December through April due to heavy snow and avalanche risk. Even within the open season, conditions vary:

May-June: Spring melt can cause landslides and road damage. The landscape is green and blooming, but expect delays.

July-August: The most reliable months — all passes are open, weather is warm (though nights can still drop below freezing at altitude), and road conditions are generally at their best. However, this is also monsoon season in the Pakistani lowlands, which can cause flooding on the southern sections.

September-October: Many say this is the ideal window — stable weather, clear skies, and spectacular autumn colors in the Hunza Valley.

Practical Tips for KKH Travelers

Altitude: The pass is at 4,693 meters — altitude sickness is a real risk. Spend a night in Tashkurgan (3,100m) to acclimatize before crossing. Symptoms include headache, nausea, and shortness of breath. Descend immediately if symptoms worsen.

Visas: Most nationalities need a Chinese visa AND a Pakistani visa. The Khunjerab Pass border crossing requires both. Note that the pass is not an open border — you must have valid visas for both countries before arriving.

Vehicle: A sturdy 4x4 is strongly recommended. While the Chinese section is well-paved, the Pakistani side has sections of unpaved road, frequent landslides, and steep drop-offs with minimal guardrails. Hiring a local driver who knows the road is the safest option.

Documentation: Carry multiple passport copies, your Chinese visa, Pakistani visa, and any required permits. You'll go through multiple military and police checkpoints, especially on the Pakistani side.

Supplies: Bring snacks, water, warm layers (temperatures can drop below freezing at the pass even in summer), sunscreen, and a basic first-aid kit. There are few services on the Chinese section south of Kashgar.

The KKH as a Silk Road Continuation

The Karakoram Highway follows one of the ancient southern branches of the Silk Road — the route that Buddhist pilgrims, traders, and armies used to cross between the Tarim Basin and the Indian subcontinent. Marco Polo likely traveled a similar path in the 13th century, describing the Pamir region as "the highest place in the world." Two millennia before him, trade caravans carried Chinese silk to the markets of Taxila (near modern Islamabad) and beyond to Persia and Rome. Driving the KKH today, you're quite literally following in the footsteps of history.

The Karakoram Highway is not for everyone — it demands preparation, patience, and a tolerance for long days on winding mountain roads. But for those who make the journey, it offers one of the most profound travel experiences on Earth: 1,300 kilometers through the heart of the world's greatest mountain range, on a road that shouldn't exist but miraculously does.