Manali-Leh Is Three Rides, Not One: Rohtang, Baralacha, Tanglang

The Manali-Leh Highway is described in most riding accounts as a single 479-kilometre route through the Indian Himalaya. The description is correct in the sense that you start in Manali and you finish in Leh, but it misses what actually happens between them. The highway crosses four major mountain passes, four distinct climatic zones, and arguably three different countries — not in any political sense, but in the sense that the landscape you ride through changes so completely between the major passes that the sections are best understood as separate rides stitched together. Rohtang (or now the Atal Tunnel) takes you out of the Indian foothills into the high Lahaul valley. Baralacha takes you out of Lahaul into the lunar high-desert plateau. Tanglang takes you out of the plateau into Ladakhi Tibetan country. Each pass closes a chapter and opens a new one. This is the segmented version of the ride, told by what actually changes when.

The numbers, before we break the route into pieces

The Manali-Leh Highway is 479 kilometres in total length on the modern alignment (428 kilometres before the Atal Tunnel opened in 2020). Total elevation gain on a south-to-north ride is around 3,500 metres net, with significantly more cumulative climbing because the route crosses and re-crosses river valleys. The highest point is Tanglang La at 5,360 metres. The lowest point on the route is Manali at 2,050 metres. Total riding time at a sustainable touring pace is 14 to 18 hours, split across two long days (the experienced rider’s pace) or three relaxed days (the recommended foreign-visitor pace). The Border Roads Organisation maintains the route, and BRO opening dates have moved earlier across the last decade as the Atal Tunnel removed Rohtang from the seasonal closure equation.

In 2026, the BRO timeline expects Baralacha La open in late May, the Nakee and Lachulung passes within a few days after, and Tanglang La by early June at the latest. The route therefore opens later than the Atal Tunnel side (which is now year-round to Sissu and Keylong), and the riding window is approximately late May through mid-October. Outside that window the high passes accumulate snow that closes the road for civilian traffic. The BBT post on the 2026 opening dates (post 12910) covers the year-to-year BRO calendar in detail.

For Big Bike Tours’ 15-day Himalayan Ride product, the Manali-Leh Highway is the central spine of the itinerary, with three to four days dedicated to the route itself and additional days for Ladakhi side trips, acclimatization stops, and the return journey. This article focuses on the segmented experience of the central spine rather than on the full itinerary.

Segment one: Manali to Keylong, the green Lahaul valley

The first 115 kilometres from Manali to Keylong is the segment that has been most transformed by the Atal Tunnel. Pre-2020, the route climbed over the Rohtang Pass at 3,978 metres, a notoriously difficult section in early season with snow walls into June, mud slides in monsoon, and traffic jams that could add hours to the day. Since the Atal Tunnel opened in October 2020, the same Manali-Keylong leg has become a 2-hour transit on excellent tarmac, with the 9-kilometre tunnel itself replacing the most difficult part of the old climb.

The Atal Tunnel sits at 3,060 metres elevation and is operational year-round, 24 hours a day. The road through the tunnel runs at 80 kilometres per hour comfortably, with controlled lighting and ventilation. The exit on the Keylong side puts you into the Lahaul valley at around 3,200 metres, with the climate already noticeably cooler than Manali and the landscape shifting from the dense Himalayan forest of the south side to the more open conifer-and-grassland mix of the Lahaul side. The change is striking even though the elevation difference is modest.

For the seasonal riders who specifically want to ride over Rohtang Pass — and there is a category of foreign visitors who do, for the historical resonance and the open-road experience — the old route is still maintained as the Manali-Rohtang-Marhi-Keylong alternative from June through September. The drive time is 4 to 5 hours via Rohtang versus 2 hours via the tunnel. The scenery via Rohtang is dramatic; the operational reliability is much lower. Most BBT clients take the tunnel southbound for the morning leg and consider Rohtang as a possible afternoon detour from Keylong rather than the main route.

The character of the riding in segment one is alpine European. The valley is green. The river (Bhaga, joining the Chandra at Tandi to form the Chenab) runs cold and clear. Small villages with stone houses and prayer flags appear at irregular intervals. Sissu, 25 kilometres into the Lahaul side via the tunnel, has emerged since 2020 as a small tourism town with cafés and guesthouses. Keylong, the larger administrative centre, has the proper infrastructure for an overnight stop. Henrik, a Stockholm-based commercial banker on a 2024 BBT Himalayan Ride who rode the Manali-Keylong section in early September, said the section reminded him of the Norwegian fjords more than the Tibetan plateau, which surprised him given that he was supposedly riding into Ladakh.

Segment two: Keylong to Sarchu, the high desert begins

The 80 kilometres from Keylong to Sarchu via Baralacha La is the segment where the landscape changes most dramatically. The route climbs from the Lahaul valley’s green pastures up the Bhaga river through Jispa (an overnight option at 3,200 metres for riders who want extra acclimatization), then crosses into a much drier, higher landscape as it approaches the Baralacha pass at 4,890 metres. By the time you summit Baralacha, the landscape is essentially treeless. The valleys are wider. The light is different — harsher, with less moisture diffusion. The rock colour shifts from grey-green to ochre and brown. You have entered the high desert plateau.

Baralacha La itself is one of the more impressive Himalayan passes for riding because the approach from both sides is gradual rather than the steep switchback drama of some smaller passes. The summit at 4,890 metres has the standard pass infrastructure — a Tibetan-style sign with the elevation marker, several prayer flag installations, a small chai stop in season. The view from the summit looks across the Chandra-Bhaga watershed to the south and into the Lingti valley to the north. The first time the riding photo opportunity catches you off guard is usually at Baralacha; the second time is usually at the rest of segment two.

The 25 kilometres past Baralacha descending to Sarchu run through some of the most distinctly Tibetan-looking terrain in the entire Indian Himalaya. The Lingti Plains are a high-altitude grassland at 4,300 to 4,500 metres, with grazing yaks, scattered Buddhist mani stones, and the visible curve of the earth on the horizon. Sarchu itself is not a town but a tent encampment at 4,290 metres, with seasonal accommodation in canvas dome tents heated by yak-dung stoves. Overnight at Sarchu is the standard acclimatization stop for the south-to-north direction. Yumiko, a Yokohama-based industrial designer on a 2024 BBT Himalayan Ride, said her first sight of the Lingti Plains from the Baralacha descent was the moment she understood why people speak about the Indian Himalaya as different from any other mountains they’ve seen. The Alps don’t look like this. Hokkaido doesn’t look like this. This is its own place.

The riding character of segment two is high desert. The road surface is generally good asphalt for the modern alignment, with some sections of broken tarmac at the higher altitude where freeze-thaw cycles damage the surface annually. The BRO reconstructs these sections each spring. The technical demand is moderate — wide road, reasonable curves, manageable gradient. The altitude is the variable that makes segment two harder than its road profile suggests. Riders who felt strong on segment one start feeling the thin air on segment two, and the 4,290-metre Sarchu overnight is the first night where most foreign visitors notice altitude effects on their sleep.

Segment three: Sarchu to Leh, the Tibetan plateau proper

The 250 kilometres from Sarchu to Leh is the longest segment of the route and crosses the highest passes. Three named passes punctuate the section: Nakee La at 4,740 metres, Lachulung La at 5,065 metres, and Tanglang La at 5,360 metres. The third of these is the highest motorcycle-accessible point on the standard Manali-Leh route and one of the highest motor-vehicle passes in the world. The riding time for the full Sarchu-Leh segment is 8 to 10 hours at a sustainable pace, which is why most itineraries split this into two days with overnight at either Pang (the small tent stop 80 kilometres past Sarchu at 4,500 metres) or Rumtse (the village 50 kilometres past Pang at 4,200 metres).

The Gata Loops, the 21 hairpin switchbacks that climb from the Pang plains to Nakee La, are the iconic riding photograph of the entire Manali-Leh route. The loops climb roughly 470 metres of vertical in 5 kilometres of horizontal distance, in a series of sweeping switchbacks that photograph well from above (drone) or from the bottom (the river crossing at the base). The riding itself is not technically demanding — the curves are wide, the road surface is acceptable, and the gradient is moderate. The visual drama is what makes the section memorable.

The More Plains, between Pang and Tanglang La, are a 40-kilometre stretch of high-altitude grassland at 4,500 to 4,800 metres that feels like the Mongolian steppe transposed to India. The plains are entirely treeless, with grazing kiang (Tibetan wild ass) sometimes visible at the edges, and the road runs almost straight across the middle. After the dramatic riding of the previous sections, the More Plains can feel anticlimactic. They aren’t. The expansive emptiness is its own statement of where you are.

Tanglang La at 5,360 metres is the final major pass before Leh. The summit has a small temple, prayer flags strung in every direction, and a sense of altitude that comes from looking south back across the route you just rode. The descent on the north side runs 50 kilometres into the Indus valley, with the road dropping through dry rock-and-scree landscape before flattening onto the Indus floodplain near Upshi. By the time you reach Upshi at 3,500 metres, you’ve descended 1,860 metres from Tanglang. The change in atmospheric pressure is genuinely noticeable. The body starts feeling slightly better immediately.

The final 50 kilometres from Upshi to Leh runs along the Indus valley on excellent road, with the river on the right and the dry Ladakhi mountains on both sides. The Tibetan Buddhist monasteries (Hemis, Thiksey, Shey) start appearing along the route, marking the entry into proper Ladakh culture. Leh itself, at 3,500 metres, feels low and comfortable after the four days of higher altitude. Magdalena, a Krakow-based microbiologist on a 2024 BBT Himalayan Ride, called the moment of arriving in Leh “the first time in a week I remembered what breathing easily felt like.” She had ridden well throughout. The body still remembers when the altitude releases.

What changes between the segments, in concrete terms

Segment one’s vegetation is dominated by Himalayan conifers (deodar cedar, blue pine) and broadleaved trees in the lower Lahaul valley. Segment two has minimal tree cover above Jispa, with grass, hardy shrubs and lichens dominating. Segment three is essentially treeless from Sarchu onward, with only the sparsest tundra-style vegetation. The visual transition from green forest to high desert happens between Baralacha and Sarchu, a single afternoon’s ride.

The temperature gradient by season tells a similar story. In June, Manali’s daytime temperature averages 22 to 28 Celsius. Keylong sits at 14 to 20. Sarchu sits at 6 to 14. Tanglang La during the day in June can drop to 0 to 5 Celsius even with sunshine. The descent from Tanglang to Leh recovers to 12 to 20 in the Indus valley. A rider who packs only for Manali weather gets caught at Tanglang. The right packing approach is layers — lightweight summer riding gear plus a thermal mid-layer plus a waterproof shell, all carried within reach.

The cultural character also shifts segment by segment. Segment one is Indo-European Himalayan culture, with Hindu and Buddhist syncretism, Hindi-Pahari language, and infrastructure that connects naturally to lowland India. Segment two transitions into Tibetan cultural geography, with Buddhist prayer flags becoming more prominent, the architectural style shifting toward Tibetan flat-roofed stone houses, and the food becoming more dairy- and barley-based. Segment three is fully Tibetan Buddhist Ladakhi culture, with monasteries, the Ladakhi language (closely related to Tibetan), and a daily rhythm that connects to the broader Tibetan plateau rather than to the Indian lowlands. Three different rides in three different countries, on the same official route.

The acclimatization implications of the segmented profile

The Manali-Leh Highway is a textbook case for graduated altitude acclimatization. The four-day route, properly paced, gives the rider’s body time to adapt at each elevation step before climbing higher. Manali at 2,050 metres requires no special acclimatization for healthy riders. The Keylong overnight at 3,200 metres is the first meaningful altitude step. The Jispa overnight at 3,200 metres reinforces the same step. Sarchu at 4,290 metres is the major climb in a single day. Pang or Rumtse at 4,200 to 4,500 metres reinforces the higher step. The Tanglang La summit at 5,360 is the brief excursion above the acclimatization level, with immediate descent to Leh at 3,500.

Riders who try to compress the route into two days violate this acclimatization pattern. The single-day Manali-to-Sarchu ride takes you from 2,050 to 4,290 metres in 8 hours, which is enough altitude gain to produce moderate to severe AMS in many riders. The single-day Sarchu-to-Leh push takes you over three high passes including Tanglang in a single morning, which compounds the prior day’s exposure. The published AMS literature on graded ascent recommends no more than 500 metres of net sleeping-altitude gain per day above 3,000 metres. The four-day Manali-Leh pace respects this guideline. The two-day pace violates it. The accident and evacuation statistics tell the predictable story.

Klaus, a Munich-based industrial designer who rode the route as part of a friend’s two-day compressed itinerary in 2023 against the explicit advice of his local guide, was helicoptered from Pang back to Manali on day two with confirmed high-altitude pulmonary edema. He spent six days in Manali hospital and finished his trip on commercial flights to Leh. He rode the Manali-Leh route again in 2025 on the standard four-day pace and completed it without incident. The route is the same. The pacing is the variable.

The riding character that makes the segmentation worth respecting

The segmentation isn’t just about altitude and visual changes. The riding itself has different demands in each segment. Segment one (Manali-Keylong) is the closest to standard European mountain riding — tight curves, good road, focus on the corners. Segment two (Keylong-Sarchu) is open-mountain riding with longer sight lines, more wind, and the first taste of the cumulative altitude fatigue. Segment three (Sarchu-Leh) is endurance riding with sustained altitude exposure, longer distances between rest points, and the technical complexity of three high passes within a single day’s ride.

Sven, a Hamburg-based cardiologist who rode the route in 2024 and tracked his own physiological metrics with a continuous heart-rate monitor, said the segment-by-segment change was visible in the data. His average heart rate per riding hour was 102 bpm on segment one, 118 bpm on segment two, and 135 bpm on segment three. Same rider, same bike, similar effort. The cardiovascular load increased by 30 percent across the route, with most of the increase attributable to the altitude rather than to riding difficulty. Recognising this in advance lets the rider pace properly across the days. Treating the route as homogeneous is the error.

The optimal Big Bike Tours pacing for the route is four nights and four riding days: night one Manali, night two Keylong (via Atal Tunnel), night three Jispa or Sarchu (with the Sarchu option only for riders who acclimatized in Manali for two or three nights first), night four Pang or Rumtse, arrive Leh on day five. Several BBT clients add an extra acclimatization night either in Manali (pre-trip at 2,050 metres) or in Keylong (mid-trip at 3,200 metres) and report substantially better experience on the higher segments.

What goes wrong on the highway and how it gets fixed

The first thing that catches riders unprepared is the speed of weather change at altitude. Tanglang La can be sunny and 8 Celsius at 10 AM, snowing and minus 2 at 11 AM, and back to clear by 1 PM. The Himalayan mountain weather system produces these short-cycle changes faster than most temperate-zone riders are used to. The fix is to start mountain pass crossings early in the morning, complete the highest sections by noon, and avoid the afternoon convective instability that builds across the high plateau through the day. Anneliese, a Vienna-based architect on a 2025 BBT Himalayan Ride who crossed Tanglang in a 30-minute snow squall, said the worst part was that her group had left Sarchu at 10 AM rather than 7 AM. The local guide had advised the earlier departure. The group had wanted breakfast. The trade-off was visible.

The second issue is tyre wear on the Gata Loops. The sustained-cornering pattern of the 21 switchbacks combined with the abrasive grit-laden Indian Himalayan road surface produces faster front-tyre wear than equivalent European mountain riding. BBT support trucks carry spare tyres on the Himalayan Ride for this reason. Self-organised riders should expect to replace a heavily-worn front tyre after the route. Bjorn, a Copenhagen-based architect on a 2024 self-organised Himalayan tour, finished the Manali-Leh leg with a front tyre at 1.2 mm of tread depth — legally marginal — and bought a replacement at the Leh BRO-adjacent shop before continuing toward Khardung La.

The third issue is fuel range. The 100-kilometre stretch between Tandi and Karu has no reliable fuel station, and the secondary stretches between Sarchu and Pang or Pang and Tanglang are similarly fuel-deserts. The Honda Africa Twin’s 24-litre tank is comfortable for these stretches. The Royal Enfield Himalayan 450’s 17-litre tank is workable but tight. Smaller bikes need to carry an extra 5-litre jerry can. The BRO maintains an emergency fuel supply at Pang during the riding season, but the supply is limited and not guaranteed.

The fourth issue is mobile coverage. Indian SIM cards work intermittently across the route. Manali coverage is reliable. Keylong is patchy. Jispa to Sarchu has essentially no coverage. Pang has a single Indian Army-installed signal repeater that works on Airtel and BSNL networks. Tanglang La has no coverage. Leh has full coverage. Riders should download offline maps for the entire route and brief their family on the fact that the four-day window will be largely silent. Yumiko’s family in Yokohama, mentioned earlier, had agreed in advance that the four riding days would be communication-free. Other riders who skip this conversation produce unnecessary worry at home.

Ride the three countries that share a single highway

The Manali-Leh Highway is one of the great mountain motorcycle routes of Asia, and treating it as three connected rides rather than one continuous transit is the framing that lets you appreciate what you’re actually riding through. The vegetation changes. The altitude changes. The cultural geography changes. The riding itself changes. The four-day pace respects all of these transitions and gives the body and the brain time to adjust at each step. Big Bike Tours’ 15-day Himalayan Ride motorcycle tour uses the Manali-Leh Highway as the central spine, with the segmented pacing built into the daily structure and acclimatization nights at the right altitudes. Get in touch via our contact page well ahead of the 2026 season — the riding window opens in late May, and the prime weeks of June and early September fill up early.