
Rohtang Pass or the Atal Tunnel — which day to do
Two ways over one ridge
The Rohtang ridge closes the Kullu valley to the north, and there are two ways across it: over the top, by the pass at 3,978 m, or under it, by the tunnel, 8.8 km long. They are different days, and the most common confusion in planning a Manali trip is treating them as one.
Photos: Vinayaraj (CC BY-SA 4.0) · Navneet Sharma (CC BY-SA 4.0) · Biswarup Ganguly (CC BY 3.0) — via Wikimedia Commons, resized.
The pass
Open roughly May to November. Every vehicle needs a permit, one per car, issued online by the district administration with a daily cap that sells out in season; taxi operators usually hold their own. It is 49 km from Manali and about an hour and a half of driving each way on a clear road, more with the queue at the checkpost above Gulaba and the traffic on the hairpins. Budget the whole day.
What you get is height: the road above the treeline, snow at the roadside into June, the view down both sides of the divide, and the thin, cold air of nearly four thousand metres. What you do not get is a place — the top is a car park, a few stalls and a lot of people in hired snowsuits.
The tunnel
Open every month. No permit. About 43 min from Manali to the south portal, ten minutes through, and a short descent to Sissu on the far side: 39 km and roughly an hour door to door. In winter the road above Solang is cleared after each snowfall and the police may check chains at the barrier; that is the only friction.
What you get is a place. The change of country at the north portal, the bare slopes and cold sky of Lahaul, a village with a waterfall across the valley and a lake below the road, and snow for most of the winter and into spring. What you do not get is the height or the sense of crossing.
The loop
In season, with a permit and a six o'clock start, the two combine: up over the pass, down the far side to Sissu for lunch, and back through the tunnel in half an hour. It is the full version of the ridge and a long day. With two days out from Manali it is better as two days, with the four-day itinerary as the shape.
Winter
From December to April the choice makes itself: the pass is shut and the tunnel is the snow drive. A winter "Rohtang trip" sold in the town is a Sissu trip, and a good one. The snow itinerary is built round it.
Cost
The tunnel costs nothing. The pass costs the permit fee on the portal and a longer taxi day; taxi rates for both are quoted by the union at the Manali stand by the day and change with the season, so ask the evening before. Warm clothes are hired at the roadside above Kothi by the day for either.
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Is the Atal Tunnel better than Rohtang Pass?
For most first visits, yes. The tunnel needs no permit, is open every month, takes about an hour to Sissu, and puts you in a different valley with snow for half the year. The pass needs a permit, is open only May to November, takes a full day, and gives height and a view rather than a place.
Can you do both Rohtang and the tunnel in one day?
In season, with a permit and an early start, yes: up over the pass to the far side, down to Sissu for lunch, and back through the tunnel. It is a long day and the return through the tunnel is the easy half. With two days out from Manali, the pass one day and the tunnel another is better.
Do you need a permit for the Atal Tunnel?
No. The tunnel is a national highway with no permit or pass. The old road over Rohtang is the one with the per-vehicle permit and the daily cap, issued online by the district administration. In winter a chain check at the barrier above Solang when there is snow is a safety check, not a permit.
Which has more snow, Rohtang or Sissu?
In season, when the pass is open, Rohtang has snow at the roadside into June and is higher and colder. From December to April the pass is closed, and Sissu through the tunnel is the only snow drive, with plenty of it. So: Rohtang in May and June, Sissu the rest of the year, and whenever you want no permit.