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Atal Tunnel: Length, Height and the Road to Spiti

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Atal Tunnel: Length, Height and the Road to Spiti

The Atal Tunnel near Manali: how long it is, its height, where it leads, whether it is open in winter, and how our Spiti trips use it on the way out.

Updated 7 Nov 2026 4 min read

The Atal Tunnel runs under the Rohtang Pass and links Manali with the Lahaul valley. On our summer Spiti tour and the Spiti bike trip, it is the last big landmark on the way from Chandratal back to Manali.

Atal Tunnel facts

Atal Tunnel at a glance
FactDetail
LengthAbout 9 km
HeightRoughly 3,000 m (about 10,000 ft)
Opened2020
ConnectsThe Manali side with Sissu in Lahaul
ReplacesThe climb over the Rohtang Pass

Where it fits on the road to Spiti

From Manali, the road goes through the Atal Tunnel into Lahaul, then towards Gramphu, Batal and Kunzum Pass, and on to Kaza. The tunnel is open most of the year, but the road beyond it to Kunzum and Spiti is open only in summer, usually from June to September, depending on snow.

Kunzum PassShimla or Manali to Kaza?

How our trips use it

Our summer Spiti tour and the Spiti bike trip enter Spiti from the Shimla side and come out this way: Chandratal, Batal, the Atal Tunnel and Manali, then the overnight Volvo to Delhi. The winter expedition does not use it, because Kunzum Pass is closed by snow.

Summer Spiti tourSpiti bike trip

Tips for the tunnel

  • Switch on your headlights before entering
  • Keep to the speed limit and do not stop inside
  • Expect a sudden change in weather at the far end
  • Traffic can build up near the tunnel on busy summer weekends

Questions

How long is the Atal Tunnel?

About 9 km, under the Rohtang Pass.

Is the Atal Tunnel open in winter?

It is usually open through the year, with closures during and after heavy snow. The road beyond it to Spiti is closed in winter.

Where does the Atal Tunnel go?

From the Manali side to Sissu in the Lahaul valley, avoiding the climb over Rohtang Pass.

Do your Spiti trips use the Atal Tunnel?

Yes. The summer tour and the Spiti bike trip leave Spiti over Kunzum Pass and come back to Manali through the tunnel.

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