The Chadar Trek isn't something you book on a whim. You need three clear nights in Leh before you're even allowed near the ice, a hospital-verified fitness clearance, and a narrow window that has been unreliable the last two winters for different reasons.
If you're working out how to plan the Chadar Trek, that reliability question matters more than any packing list. The 2025 season was delayed by about a week when the Zanskar River hadn't frozen enough by its scheduled start, then went ahead once ice conditions improved. The 2026 season didn't recover the same way: the river never froze solidly enough, and the trek stayed suspended for the whole winter, the first time locals could recall that happening. This guide covers what's actually required for the frozen Zanskar river trek: season timing, permits, medical clearance, realistic costs, gear, and what to do if the season doesn't open on schedule.
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Quick Answer Plan the Chadar Trek for a January to mid-February window, book only through a Ladakh Tourism-registered operator, and budget 8–9 days Leh-to-Leh. You'll need a mandatory 3-night acclimatization stay in Leh plus a hospital fitness clearance before you're allowed on the ice. Trek packages typically run ₹19,500–₹26,500, with permit, registration and insurance charges of roughly ₹6,000–₹10,000 paid separately at Leh. The 2026 season was suspended for the whole winter after the river failed to freeze, so treat 2027 dates as unconfirmed until your operator has current word from the administration. |
What the Chadar Trek Actually Is
The Chadar (Ladakhi for "sheet" or "blanket") is the ice cover that forms over the Zanskar River each winter inside a narrow limestone gorge. Historically it was the only route in and out of the Zanskar Valley once the mountain passes closed under snow. As a trek, it means walking on that ice sheet from Chilling toward Nerak and its frozen waterfall, then retracing the same route back, camping at riverside sites or in caves along the way.
| Chadar Trek at a Glance | |
| Total trekking distance | About 62 km (there and back combined), walked in daily stretches of roughly 10–15 km |
| Duration | 8–9 days, Leh to Leh, including 3 acclimatization/registration days |
| Maximum altitude | Approximately 11,000–11,150 ft |
| Temperature | Day: -5°C to -15°C. Night: -15°C to -25°C by government figures; several operators report the coldest nights closer to -30°C |
| Season | January to mid-February, condition-dependent |
| Difficulty | Difficult to extreme |
On the 62 km figure specifically: this is the total round-trip distance most sources, including the Ministry of Tourism's own listing, use for the standard Chilling-to-Nerak-and-back route. You'll sometimes see it written as though it were one-way, which is a genuine mix-up across trekking sites, not a second, longer version of the trek.
Who Should Attempt It
This is graded a difficult to extreme trek, and operators mean it. Night temperatures on the riverbed can fall well below -20°C, and you're walking on ice that cracks and shifts under you for several hours a day. It suits fit, experienced trekkers comfortable with cold-weather camping, not first-time Himalayan trekkers or families. Most operators disqualify anyone with heart disease, uncontrolled high blood pressure, asthma or epilepsy: evacuation is slow and difficult on this terrain even with rescue teams on standby, so there's little margin for a medical emergency.
Step 1: Time It Right, and Build In a Backup Plan
The trek typically runs from January into mid-February, with the exact start and end decided each year by a reconnaissance team, not a fixed calendar date. Outside that window, the Chadar is either still forming or breaking up, and no operator will run it.
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2027 Season Update: Read This Before Booking Flights The last two winters give a clear picture of how unpredictable this trek has become. In 2025, a recce team found the river under-frozen at the scheduled start; the administration postponed the trek by roughly a week, and it went ahead once conditions improved. In 2026, the same postponement pattern didn't resolve: the river never froze solidly enough, the trek stayed suspended through the whole winter, and it was the first time in living memory locals could recall the Chadar failing to happen at all. A 2026 news report citing the Leh Meteorological Centre put that winter's December-to-February average at -8.6°C, its warmest in eight years. Nobody can promise the river freezes on schedule for 2027 either. Don't book non-refundable flights until your operator has current confirmation from the administration, which normally comes only after a physical recce in early January. |
Step 2: Book Only Through a Registered Operator
You cannot organise this trek independently. Only Ladakh Tourism-registered tour operators are permitted to run Chadar groups, coordinating registration through the administration and, on the industry side, ALTOA (the All Ladakh Tour Operators Association). ALTOA is an operators' body, not the licensing authority itself, so before you pay anything, ask to see the operator's registration rather than taking a verbal assurance. A handful of unregistered operators have surfaced in past seasons, and getting stopped at a checkpost without valid clearance ends your trip on the spot.
Step 3: Get to Leh by Air
Between roughly November and April, the Manali–Leh and Srinagar–Leh highways are both closed by snow, which makes flying into Kushok Bakula Rimpoche Airport the only realistic way to reach Leh for a winter trek. Fares climb steeply the closer you book to the season's known good dates, so once your operator confirms a batch, book early rather than waiting for a discount.
Step 4: Build In the Mandatory Acclimatization and Medical Clearance
Leh sits at roughly 3,500 metres. Flying in directly from sea level and heading straight onto a high-altitude ice trek is exactly the combination that causes altitude sickness, so the local administration mandates a minimum of three nights in Leh before you're permitted anywhere near the Chadar. Your operator verifies this using your flight boarding pass. There's no way around it, and no operator worth using will try.
What the Medical Check Involves
On day three (typically), you're taken for a mandatory fitness check at a Leh hospital, covering at minimum a review of your medical history and a basic physical assessment. Clearing this check is what gets you the certificate needed for the rest of your permits. If you're marked unfit, you don't go on the ice. Some operators offer an alternate Leh sightseeing itinerary instead, but check this is actually included before you rely on it. The exact battery of tests can vary by season and hospital, so confirm current specifics with your operator rather than assuming a fixed checklist.
Step 5: Sort Permits, Registration and Insurance
Because the route runs through protected forest and wildlife zones, it needs more than the standard Inner Line Permit most Ladakh treks require. Between the wildlife/environmental fee, registration charges, and mandatory adventure insurance, operator guides put the combined cost at roughly ₹6,000–₹10,000 per person, on top of your trek package. Treat that as an indicative range rather than a fixed government rate: these charges are set by the current season's administrative order, so ask your operator for an itemised breakup and confirm it's separate from (not already inside) your package quote.
Step 6: Check Fitness and Health Eligibility
There's no single government-set age rule for this trek. Operators set their own cutoffs, and the ones we've seen commonly fall somewhere in the 12-to-55 range, but that's a pattern across listings, not a regulation, so confirm the exact number with whoever you book with. What's more consistent is the health screening: most operators rule out heart disease, uncontrolled high blood pressure, asthma and epilepsy, and several prefer trekkers who've already done at least one high-altitude trek, given how much this route combines altitude, extreme cold and unstable footing at once.
Step 7: Budget It Out
Your total spend breaks into two buckets: what your trek operator charges, and what you pay in permits and registration separately. Treat the figures below as indicative operator-market ranges rather than fixed prices; get a current quote before you commit.
| Cost head | Typical range | Paid to |
| Trek package (8–9 days, Leh-Leh) | ₹19,500 – ₹26,500 + 5% GST | Your tour operator |
| Wildlife/Hemis permit + ALTOA NOC + LAHDC + environmental fee | ₹6,000 – ₹10,000 | Leh administration (TIC) |
| Adventure insurance (mandatory) | Included in the fee above, via authorised provider | Leh administration |
| Luggage porter/offloading (optional) | ₹5,000 – ₹11,000 | Local porter service |
| Leh sightseeing, extra meals, personal gear | ₹3,000 – ₹6,000 | Various |
A realistic all-in budget for a first-timer, flights excluded, lands somewhere between ₹32,000 and ₹45,000. Flights to Leh in the January–February window typically add another ₹8,000–₹18,000 return depending on how far ahead you book.
Step 8: Know the Route and the Day-by-Day Skeleton
The 62 km covers the standard Chilling-to-Nerak-and-back route, walked in daily stretches of roughly 10–15 km spread across 8–9 days Leh-to-Leh. Treat the itinerary below as illustrative rather than fixed: the route has been shortened in some recent years by road construction along the Nimu-Padum-Darcha highway, and the exact start point, camps and daily distances are set each season by the administration's reconnaissance, not by any operator's brochure.
| Day | What happens |
| 1 | Arrive Leh (3,500 m) by flight. Full rest, no exertion. |
| 2 | Acclimatization day in Leh. Short walk to Shanti Stupa if you're feeling fine. |
| 3 | Mandatory medical check. Permits and registration processed. |
| 4 | Drive to the road-head; first walk onto the Chadar to the first campsite. |
| 5–6 | Trek along the ice toward Nerak, camping riverside or in caves each night. |
| 7 | Reach Nerak frozen waterfall; begin the return leg. |
| 8 | Trek back toward the road-head, retracing the outward route. |
| 9 | Drive back to Leh; departure or buffer day. |
Treat Day 9 as a buffer, not a guarantee. Ice conditions, weather, or a slower group pace can push the return by a day, and flights booked too tightly against the last trek day are a common source of missed connections.
What the Trail Actually Feels Like
Ice thickness varies within the same stretch of river: solid and blue-white in one section, thin and creaking a few hundred metres on. Trek leaders reroute the group onto the riverbank or over boulders wherever the Chadar looks unreliable. Pace depends more on ice quality than fitness: a strong walker can still be slowed to a crawl by a cracked or slushy stretch. Nights are spent in tents on the riverbank or, on some itineraries, in caves along the route, where daytime temperatures of -5°C to -15°C feel almost manageable until the drop after sunset. Government tourism material puts night temperatures at -15°C to -25°C; several operators describe the coldest nights on record closer to -30°C, so pack for the colder end of that range rather than the average.
Common Mistakes to Avoid
- Booking non-refundable flights before the operator confirms the ice has stabilised.
- Skipping or rushing the 3-night Leh acclimatization: altitude sickness at 3,500 m is a real risk, not something to shortcut.
- Assuming summer-trek fitness is enough; the Chadar demands cold-weather endurance too.
- Booking with an operator who can't show current Ladakh Tourism registration when asked.
- Packing cotton base layers, which hold moisture and turn dangerous in sub-zero, high-exertion conditions.
Essential Gear
A full kit list depends on your operator's inclusions, but at minimum plan around these layers and items:
- Moisture-wicking base layers, an insulating mid layer (fleece or down), and a windproof, waterproof outer shell.
- Insulated, waterproof footwear with good grip. Regular trekking shoes aren't built for standing water and ice.
- A sleeping bag rated well below -20°C, plus a warm hat, insulated gloves and wool or synthetic socks.
- Sunglasses or snow goggles and high-SPF sunscreen. Glare off the ice is intense even in overcast conditions.
- A headlamp with spare batteries, a water bottle or thermos, and any personal medication you need.
Pro Tips
- Get the refund/reschedule policy in writing before paying, in case the season is called off.
- Carry cash in small denominations. Card and UPI acceptance is patchy outside Leh town.
- Rent a double-layer sleeping bag rated well below -20°C locally in Leh rather than relying on a summer-Himalaya bag.
- Ask your operator specifically about footwear recommendations for ice, since this varies by outfitter.
What If the Season Doesn't Open?
After 2026, this isn't a hypothetical. Ask your operator upfront what happens if the administration suspends the route after you've paid: whether you get a full refund, a credit toward a rescheduled date, or nothing. Keep your flights on a fare class that allows changes, and consider travel insurance that covers trip disruption for reasons outside your control. A 2026 report on the trek's suspension noted that guides and porters in Nerak lost a full season of income when the river didn't freeze, so a called-off trek affects more than your own itinerary; it's worth booking with an operator whose cancellation terms you'd actually be comfortable with.
Planning This With a Specialist Operator
The Chadar sits inside a tightly regulated system covering medical clearance, permits and insurance end to end. If you're already working with Himalayan Holidays on other Himalayan treks and want help planning a Ladakh trip, get in touch. We'll point you to a vetted, currently registered partner and walk you through the season-status check before you commit to flights.
FAQs
Is the Chadar Trek happening in 2027?
Nobody can confirm this until a physical recce of the river in early January 2027. The 2026 season was suspended for the whole winter after the Zanskar River failed to freeze, so don't assume 2027 will run on the usual schedule. Check with a registered operator closer to the date before booking flights.
What is the best time for the Chadar Trek?
The trek typically runs from January into mid-February, but the exact window depends on when the river freezes and passes a safety recce each year, not a fixed calendar date.
How difficult is the Chadar Trek?
It's graded difficult to extreme, with several hours a day on shifting ice and nights that can fall well below -20°C. Not suitable for first-time trekkers or anyone without cold-weather experience.
How many days does the Chadar Trek take?
Most itineraries run 8–9 days Leh-to-Leh, including the mandatory 3-night acclimatization and medical clearance before the trek itself begins.
What permits do I need for the Chadar Trek?
A wildlife/environmental fee, registration charges and mandatory adventure insurance, together roughly ₹6,000–₹10,000 by current operator estimates, paid separately from your trek package. Confirm the exact current breakup with your operator.
Is a medical certificate really mandatory?
Yes. A fitness check at a Leh hospital, usually on day three, is compulsory, and no trek permit is issued without it.
How much does the Chadar Trek cost?
Trek packages typically run ₹19,500–₹26,500 plus GST, with another ₹6,000–₹10,000 in permits and insurance, and optional porter charges on top.
What is the minimum age for the Chadar Trek?
There's no single government-set number. Operators commonly list a window around 12 to 55, but confirm the exact cutoff with your chosen operator.
What's the total distance of the Chadar Trek?
About 62 km round trip on the standard Chilling-to-Nerak route, walked in daily stretches of roughly 10–15 km. You'll sometimes see 62 km written as though it were one-way; it isn't.
What happens if the Chadar Trek is cancelled after I book?
This depends entirely on your operator's policy, which is why it's worth getting in writing before you pay: a full refund, a credit toward a rescheduled date, or neither. After the 2026 suspension, treat this question as essential, not optional.
Can beginners attempt the Chadar Trek?
It's not recommended as a first Himalayan trek. Most operators want some prior high-altitude trekking experience, given the combination of altitude, extreme cold and unstable ice underfoot.
Before You Book: Two Questions to Ask First
Everything else in this guide (fitness, gear, budget, itinerary) you can sort out over the coming weeks. These two decide whether you have a trip at all, so get both answers in writing before you pay anything or book a flight:
- Is the operator currently Ladakh Tourism-registered? Ask to see the actual registration document, since a verbal yes isn't enough.
- What happens to your payment if the season doesn't open, the way it didn't for all of 2026? Get the refund or reschedule policy in writing.
The permits, medical clearance, and cost planning in this guide only matter once those two answers check out.
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Key Takeaways Season window: January into mid-February, decided each year by a river recce, not a fixed date. The 2026 season was suspended for the entire winter after the river failed to freeze; 2025 was delayed by about a week and then went ahead. Distance: about 62 km total for the standard route, not 62 km one-way, walked over 8–9 days Leh-to-Leh. Mandatory sequence: 3 nights acclimatization in Leh, a hospital fitness check, then permits and registration, roughly ₹6,000–₹10,000 by current operator estimates, separate from your package. Typical cost: ₹19,500–₹26,500 for the trek package, plus permits, plus optional porter charges. Treat these as indicative ranges and get a current quote. Book only through a currently registered operator, and get their cancellation/refund policy in writing before paying. |
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