Sissu to Kaza is roughly 190–200 km and about 6–7 hours’ driving, taken along NH-505 via Gramphu, Batal and Kunzum La (4,551 m). It is one of the most spectacular — and roughest — roads in the Indian Himalaya, open only for a short summer window (broadly June to October). Because the drive is long and the altitude climbs steeply, spending a night in Sissu first, at ~3,100 m, gives your body a gentle head start before Spiti. This guide breaks the route into stages, flags the last fuel stop at Tandi, and tells you honestly what the road is like.
The route in brief
From Sissu you drive back down the Lahaul valley floor toward the Atal Tunnel and turn off at Gramphu, where NH-505 branches east away from the Manali–Keylong highway. From Gramphu the road runs alongside the Chandra river through Chhatru and Chhota Dhara to Batal, then climbs the switchbacks to Kunzum La, the 4,551 m pass that is the gateway into Spiti. Over the far side it drops to Losar, Spiti’s first village, and follows the Spiti river down to Kaza, the subdivisional headquarters.
It is not a highway in any ordinary sense — the Gramphu–Batal section is a rocky, unpaved track crossed by meltwater streams — so plan for a full day and start early. Sixty kilometres here can take three hours.
Stage-by-stage distances from Sissu
Breaking the drive into landmarks makes it far easier to pace. These are approximate road distances from Sissu; treat times as generous rather than optimistic.
| Point on the route | Distance from Sissu (approx) | Notes |
|---|---|---|
| Gramphu (NH-505 junction) | ~20 km | Tarred; turn-off from the Keylong highway |
| Chhatru | ~40 km | Small dhaba stop by the Chandra river |
| Batal | ~75 km | Rough road; famous Chandra Dhaba tea stop |
| Chandratal turn-off | ~78 km | ~14 km side track to the lake (detour) |
| Kunzum La (pass) | ~90 km | ~4,551 m — highest point; circle the stupa |
| Losar (first Spiti village) | ~110 km | Check-post; ID may be noted |
| Kaza | ~190–200 km | End of the drive; Spiti HQ |
For a wider set of driving distances out of the village — Manali, Keylong, Leh and more — see our distances from Sissu reference.
What the road is actually like
We will be honest, because this drive catches people out. From Sissu to Gramphu the surface is tarred and easy; the moment you leave Gramphu, the character changes. The Gramphu–Chhatru–Batal stretch is largely unpaved — loose rock, dust, and a series of nallahs (glacial streams) that flow across the road. Those streams are shallow in the cool early morning and swell through the afternoon as the sun melts more ice higher up — the single biggest reason to start at first light.
- High clearance helps. Hatchbacks do make it in dry spells, but an SUV or a car with decent ground clearance is far more comfortable and safer over the stream beds.
- Cross water early. Aim to be past Batal by late morning so the meltwater crossings are still low.
- No phone signal for long stretches. Expect to be offline from around Gramphu until well into Spiti. Tell someone your plan before you leave Sissu.
- Carry a spare and basic tools. Punctures are common on this rock. Help is thin between Batal and Losar.
None of this is meant to scare you off — it is a genuinely bucket-list drive — but it rewards travellers who respect it and start early.
Fuel, food & the Tandi pump
The most important practical fact on this whole route: fill your tank at Tandi. There is no petrol pump in Sissu, and Tandi — about 22 km from us, just before Keylong — is the last reliable fuel stop before the long, empty stretch toward Spiti (and, on the other road, toward Leh). After Tandi you can face several hundred kilometres with no dependable pump, so top up to full even if you think you have enough. Our full breakdown of fuel and cash points is on the ATM & petrol network in Sissu page.
For food and water, the famous names on this road are the dhabas at Chhatru, Chhota Dhara and Batal — simple, seasonal parachute-tent kitchens serving rajma-chawal, Maggi and endless chai. They are lifesavers but they are basic and cash-only, and they pack up when the season ends. Carry your own water and a few snacks as backup, and keep cash in small notes.
When the road is open
This is a summer-only route. Kunzum La typically opens around late May or June and closes with the first heavy snows, usually by late October or early November. Outside that window the pass is under snow and the Gramphu–Batal road is impassable, which effectively seals Spiti from the Lahaul side. Exact opening and closing dates shift every year with the snow, so they are never fixed.
Even inside the season, a spell of rain or fresh snow up high can block the road for a day or two while it is cleared. The safest approach is to ask locally the day before — message us and we will tell you what we are hearing from drivers coming through Sissu, and help you judge whether it is a go. For the broader picture of what is open when, see the best time to visit Sissu.
Why overnight in Sissu first
Kaza sits at about 3,800 m and Kunzum La at 4,551 m, so this drive gains serious altitude in a single day. If you have come up from Manali, you have climbed a long way fast, and pushing straight through to Spiti stacks a hard high-altitude day on top of an already big ascent. A night in Sissu at ~3,100 m is a sensible middle step: you sleep lower than Kaza, let your body begin adjusting, and start the Kunzum La day rested rather than frayed.
Practically, it also lets you leave at dawn. From our door you can be at Gramphu inside half an hour and across the meltwater streams before they rise. A hot pure-veg breakfast, a full tank from the night before, and an early start make the difference between a relaxed crossing and a tense one. Our mountain-view rooms come with 24×7 hot water and room heaters — welcome before a cold, early morning — and if you have any signs of altitude headache, read our note on altitude & AMS at Sissu before deciding to drive higher.
The Chandratal detour
Most people who drive Sissu to Kaza want to fold in Chandratal, the crescent-shaped “moon lake” that sits a short, rough side track off the route near Batal. It is a worthwhile detour but it adds time and a night, since the lake is best enjoyed slowly and the camps sit at around 4,000 m. If Chandratal is on your list, plan it as its own stop rather than a quick photo — our dedicated Sissu to Chandratal guide covers the distances, the camping situation and how to combine it with the Kaza run.
Frequently Asked Questions
How far is Sissu to Kaza and how long does it take?
Sissu to Kaza is about 190–200 km and takes roughly 6–7 hours along NH-505 via Gramphu, Batal and Kunzum La. The distance is modest but the rough, unpaved Gramphu–Batal section and the 4,551 m pass make it a full day’s drive — start early.
Is the Sissu–Kaza road open all year?
No. It is a summer-only road. Kunzum La usually opens around late May or June and closes with heavy snow by late October or early November, sealing Spiti from the Lahaul side in winter. Exact dates vary each year, so confirm locally before travelling.
Where is the last petrol pump before Kaza?
Tandi, about 22 km from Sissu (just before Keylong), is the last reliable pump before the long empty stretch toward Spiti. There is no fuel in Sissu, so fill up at Tandi — you may not find another dependable pump until Kaza.
What kind of car do I need for the drive?
An SUV or a car with good ground clearance is best. The Gramphu–Batal stretch is unpaved and crossed by glacial streams. Hatchbacks manage in dry conditions but struggle over the rocks and water, especially in the afternoon when meltwater rises.
Should I acclimatise before driving to Kaza?
Yes — it is wise. The drive climbs from ~3,100 m to Kunzum La at 4,551 m in one day. Spending a night in Sissu first lets your body begin adjusting to altitude and means you start the hard, high leg rested and early rather than exhausted.
Can I visit Chandratal on the way to Kaza?
Yes. Chandratal sits on a short, rough side track off the route near Batal. It is a popular detour but adds time and usually a night at altitude, so plan it as a proper stop. See our Sissu to Chandratal guide for details.
Break the Spiti drive in Sissu
Rest and acclimatise at ~3,100 m before Kunzum La — mountain-view rooms, 24×7 hot water, heaters, free parking and a hot pure-veg breakfast for an early start. Book direct.
