Arunachal Pradesh is the largest state in the North East and the most mountainous, with high passes, Buddhist monasteries and tribal valleys that feel very different from the rest of India. For most first-time visitors the choice is between the Tawang circuit in the west and Ziro Valley in the centre, and both are best done by road from Assam. You need a permit to enter, so plan that first. This guide covers routes, permits, altitude, the best season and how long to allow.
Arunachal at a glance
The state borders Bhutan, China and Myanmar and is home to more than two dozen major tribes, including the Monpa in Tawang and West Kameng, the Apatani in Ziro, and the Adi, Nyishi and Mishmi in other regions. Roads are long and winding, towns are small and far apart, and travel days are measured in hours rather than kilometres. That is part of the appeal, but it means you should not try to see too much in one trip.
West Kameng and the Tawang circuit
This is the classic Arunachal road trip, usually starting from Guwahati or Tezpur in Assam and climbing through West Kameng to Tawang. The route is covered in detail in our Tawang road trip guide.
Bhalukpong
The entry point on the Assam border, where permits are checked. The Kameng River runs alongside, and the town is a common lunch or tea stop. Some travellers spend a night here or at nearby Tipi to break the journey.
Bomdila
At roughly 2,400 metres, Bomdila has monasteries, apple orchards and views over the Kameng valley. It is a common overnight halt on the way down from Tawang.
Dirang
Lower and milder at around 1,500 metres, Dirang is a good place to acclimatise before Sela. Nearby you can visit the old Dirang Dzong village, hot springs, the Sangti Valley and kiwi and apple orchards. Many itineraries stop here for a night on the way up.
Sela Pass
Sela, at about 4,170 metres (around 13,700 feet), is the high point of the route, with a lake near the top that often freezes in winter. The Sela Tunnel, opened in 2024, now offers a lower all-weather route, but many travellers still drive over the pass on clear days for the views. Snow can close or slow the pass road in winter.
Tawang
At roughly 3,000 metres, Tawang is known for its large Gelugpa monastery, one of the biggest in India. Nearby sights include the Tawang War Memorial, Jaswantgarh war memorial on the Sela side, Nuranang (Jang) Falls, and Madhuri (Shonga-tser) Lake. Visits towards Bum La and the border lakes need extra permissions arranged locally in Tawang and are subject to army and weather conditions, so treat them as possible rather than guaranteed.
Our Tawang Himalayan Adventure follows this route over 6 nights and 7 days.
Ziro Valley
Ziro, in Lower Subansiri district, is a wide valley at roughly 1,500 metres, home to the Apatani people. It is known for its rice fields combined with fish farming, pine and bamboo groves, and traditional villages such as Hong and Hari. The Ziro Music Festival is usually held in September and draws a large crowd, so book early if you plan to go then.
The usual access is by road via North Lakhimpur in Assam or via Itanagar, with the nearest rail point at Naharlagun. Ziro is gentler than Tawang in terms of altitude and suits travellers who want village walks and a slower pace. See our Ziro Valley Escape for a 4 night, 5 day plan.
Longer trips: Mechuka and Namdapha
Mechuka, in West Siang district near the China border, is a remote high valley with a centuries-old monastery and wide open meadows. It is a long drive, usually via Aalo, and needs a week or more to do properly.
Namdapha National Park, in Changlang district in the far east, is a large tiger reserve with dense rainforest and rich birdlife. It is reached via Miao, usually from Dibrugarh or Tinsukia in Assam, and suits experienced wildlife travellers with time to spare. Both are worth considering once you have done Tawang or Ziro.
Inner Line Permit basics
Arunachal Pradesh is a protected area for entry purposes, so every visitor needs a permit.
- Indian citizens need an Inner Line Permit (ILP). The easiest way is to apply online through the official eILP portal of the Arunachal Pradesh government, using a valid photo ID. A nominal fee applies; check the official portal for current rates and processing time.
- Foreign nationals need a Protected Area Permit (PAP). Rules on group size and whether you must travel through a registered tour operator have changed over the years, so check the current requirements with the official authorities before booking.
- Carry printed and digital copies of your permit and ID. Permits are checked at entry gates such as Bhalukpong and sometimes again inside the state.
- Make sure the permit lists every district you plan to visit, for example West Kameng and Tawang for the Tawang circuit.
For step-by-step details, read our Arunachal Inner Line Permit guide. Permit rules change, so always confirm on the official portal before you travel.
Altitude and road conditions
The Tawang route climbs from near sea level to over 4,000 metres in a day or two, so mild altitude symptoms such as headache, breathlessness and poor sleep are common. Ascend gradually, drink plenty of water, avoid alcohol on the first night at height, and tell your driver if you feel unwell. If symptoms get worse, the right response is to descend. If you have heart or lung conditions, speak to a doctor before planning the trip.
Roads are mostly paved but narrow and winding, with frequent road works, landslide-prone stretches and army convoys. In the monsoon, landslides can block roads for hours or longer. In winter, snow and ice can affect Sela and higher roads. Driving after dark is best avoided on mountain stretches, and travel days should start early.
Best time to visit
- March to June: Pleasant days in Tawang and Ziro, flowers in bloom and generally open roads. Higher areas can still see snow in early spring.
- October and November: Clear skies, sharp mountain views and comfortable temperatures. Often the best overall window for Tawang.
- December to February: Cold, with snow around Sela and Tawang. Beautiful, but expect very cold nights and possible road disruptions.
- July to September: Monsoon, with the highest landslide risk. Ziro is green and lush, and the music festival falls in September, but plan with extra buffer.
Recommended trip lengths
| Trip | Suggested days | Notes |
|---|---|---|
| Tawang circuit from Guwahati | 6 to 8 | Night halts at Dirang or Bomdila both ways |
| Ziro Valley | 4 to 5 | Two full days in the valley for village walks |
| Tawang plus Kaziranga | 8 to 10 | Kaziranga is a natural stop on the way back towards Guwahati |
| Mechuka or Namdapha | 7 or more | Remote, long drives, best for second visits |
Many travellers pair Arunachal with Assam. Kaziranga fits neatly at the end of a Tawang trip, and our Assam travel guide explains how.
How we can help
Pranjal Taxi Service arranges cabs for the Tawang circuit, Ziro Valley and combined Assam and Arunachal routes, with drivers who know hill driving and halt planning. Tell us your dates and group size, and we will suggest a route with sensible overnight stops. Pricing depends on the final itinerary, vehicle and season, so send us an enquiry or WhatsApp us for a free quote.
Frequently asked questions
Do Indians need a permit to visit Arunachal Pradesh?
Yes. Indian citizens need an Inner Line Permit, which you can apply for online through the official eILP portal of the Arunachal Pradesh government.
What permit do foreigners need for Arunachal?
Foreign nationals need a Protected Area Permit. Requirements on group size and tour operators have changed over time, so confirm the current rules with the official authorities before booking.
How many days are needed for Tawang?
Plan about 6 to 8 days from Guwahati, with night halts at Dirang or Bomdila on the way up and down to help with altitude and long drives.
Is Sela Pass open in winter?
Sela often gets snow in winter and the pass road can be slowed or closed for short periods. The Sela Tunnel has improved access, but check conditions before travelling.
Which is easier, Tawang or Ziro?
Ziro is easier, with lower altitude and shorter drives. Tawang involves high passes and long mountain days but rewards you with big Himalayan views.