Har Ki Dun: the valley of the gods
Har Ki Dun is a cradle-shaped hanging valley at around 3,566 metres at the head of the Supin river, in the Govind Wildlife Sanctuary of Uttarkashi district. The name translates roughly as the valley of the gods, and in local belief this is the route by which the Pandavas walked to the heavens via the Swargarohini massif that forms the valley's headwall. It is one of the oldest documented trekking routes in Uttarakhand, walked by shepherds, pilgrims and the first European surveyors long before it became a trekking destination.
The trek is a there-and-back valley walk of roughly 50 kilometres over seven days from the roadhead at Sankri, following the river through forest and old villages before the valley opens out beneath the peaks. It is graded moderate: there is no summit and no technical ground, but the days are longer than on a weekend trek. If you are weighing it against other routes, our Har Ki Dun trek guide goes deeper into the history and the trail, and the wider picture is in our Uttarakhand trekking guide. You can also browse everything we run on the treks page.
Why do this trek
Har Ki Dun appeals to trekkers who want a journey rather than a peak. The reward is the valley itself and the way you arrive at it — gradually, over days, through changing forest and past villages where life still runs on subsistence farming and wood-carved temples. Osla, roughly halfway, has an old temple to Someshwar, or Duryodhana in some tellings, and houses built in the traditional Garhwali style with carved wooden balconies. The upper valley, ringed by Swargarohini, Hata Peak and the Borasu Pass into Kinnaur, is one of the great amphitheatres of the Indian Himalaya.
It also shares its trailhead, Sankri, with the Kedarkantha trek, so it is easy to combine the two on a longer trip, or to choose between them: Kedarkantha for a snow summit in four days, Har Ki Dun for a longer, gentler valley walk. The Ruinsara Tal lake and the Bali Pass trek branch off the same valley for those who return wanting more.
Best time for the Har Ki Dun trek
Har Ki Dun is one of the more season-flexible treks in Garhwal because it stays relatively low and follows a valley rather than crossing a pass. March to mid-April brings lingering snow on the upper trail, bare forest and cold nights, with the valley itself often still white. Late April to June is the classic green season: rhododendron and wildflowers, flowing streams, mild days and comfortable camping. The monsoon, July to mid-September, makes the trail slippery and leech-prone and swells the stream crossings, and is best avoided. Mid-September to November brings clear post-monsoon air, golden forest, harvested fields in the villages and sharp mountain views, tailing into cold. December to February turns it into a full snow trek, quiet and beautiful, with the trail broken through deep snow above Osla and much colder camps.
For clear views of Swargarohini, the autumn window and the early spring window are best. For the most comfortable walking and camping, May and June or September and October are the picks. Our guide to snow destinations near Dehradun covers the winter option in context.
How hard is Har Ki Dun?
Moderate, with length rather than altitude or difficulty as the main test. The trail gains height gradually along the river, so acute mountain sickness is uncommon, though you do sleep near 3,500 metres for two nights and should still hydrate well and pace yourself. There is no exposure, no scrambling and no need for technical equipment on the standard route in the normal seasons. What makes it a real trek is the daily distance — three consecutive days of 10 to 14 kilometres on the way in, with sustained uphill sections and several tributary-stream crossings — and, on winter departures, the effort of walking on snow.
You should be able to walk comfortably for five to six hours a day over mixed ground with a light daypack. A few weeks of jogging, brisk hill walking with a loaded pack, or cardio training beforehand makes a large difference, especially to how your knees feel on the descent. First-time Himalayan trekkers who prepare do well here; it is a common choice for a first multi-day trek. Anyone with a heart or lung condition should prepare carefully and consult a doctor.
Who this trek suits
Har Ki Dun is a strong choice for a first multi-day Himalayan trek, for trekkers who prefer a scenic journey to a summit push, and for anyone drawn to the mix of forest, river and old village life. Families with fit teenagers manage it well, as do older travellers who are used to walking, because the pace is unhurried and the altitude stays moderate. Photographers and birdwatchers get a lot out of the long forest sections. It is less suited to trekkers specifically after altitude, a technical challenge or a hard physical test, who should look at Kuari Pass, the Gaumukh Tapovan trek or the higher routes in our Uttarakhand trekking guide, and to anyone who wants a trip of only two or three days, for which Dayara Bugyal is a better fit.
Fitness and how to prepare
Four to six weeks of preparation is enough for most people. The trek rewards aerobic endurance rather than strength, so build up to a comfortable five-kilometre jog or an hour of brisk uphill walking with a loaded daypack, three or four times a week. Add stair climbing or hill repeats to train for the sustained climbs along the Supin, and try to fit in one or two long weekend walks of 12 to 15 kilometres on hilly ground before you travel — that is the best single test of whether you are ready for the consecutive long days. Break your boots in on those walks. Prioritise legs and cardio over upper-body work, and arrive rested rather than straight off a run of late nights and long drives.
Photography on the trek
The set-piece shot is the Har Ki Dun valley itself, the cradle of meadow with Swargarohini closing the head of it, best in the early morning before cloud builds on the peaks. The villages of Osla and Gangad, with their carved wooden houses and slate roofs against terraced fields, are the other subject, though you should ask before photographing people or homes. The forest along the Supin is at its best in the soft light of morning and, in May, when the rhododendron is in flower. Autumn afternoons give long golden light across the harvested fields. Carry spare batteries, keep gear in a dry-bag for the afternoon weather, and get up for at least one valley sunrise.
The route in detail
Sankri to Taluka to Seema
From Sankri at about 1,950 metres, a rough motor road or a parallel forest trail leads to Taluka, then the walking proper begins: a riverside path through pine, walnut and chestnut forest, crossing side streams on wooden bridges, to the cluster of Seema and Osla at around 2,600 metres. This is a long first trekking day but a scenic one, with the Supin always close by.
Seema to Har Ki Dun
The trail climbs more definitely now, leaving the last village behind, traversing the flank of the Kalkattiya Dhar ridge and passing through meadow and birch as the valley widens. The Har Ki Dun campsite, at around 3,560 metres, sits on open ground with Swargarohini filling the head of the valley and the Jaundhar Glacier feeding the river.
The exploration day
A day without packing up camp. Options are a walk toward Marinda Tal, a small lake below Jaundhar, or up toward the glacier viewpoint and the base of Hata Peak, or simply time in the valley to photograph and rest. This day also acts as a weather buffer.
The return to Sankri
The last three days retrace the route down the valley to Seema, back to Taluka, and out to Sankri, followed by the long drive to Dehradun. The descent is quicker than the climb but still covers the same distance, so the days remain full.
Getting to Sankri from Dehradun
Sankri is about 190 kilometres from Dehradun and the drive takes nine to eleven hours, longer if roadwork or snow-clearing is underway. The route runs through Mussoorie, Nowgaon, Purola and Mori, following the Tons and then the Supin for the final stretch. Dehradun, with Jolly Grant airport and a railway station connected to Delhi, is the natural staging point, and most treks begin and end with a night there or an early departure. If you have spare time near the plains, our guide to adventure activities around Dehradun covers the options.
Where you stay and daily life
The first and last nights are in a lodge or guesthouse at Sankri; the nights on the trail are in tents at Seema and Har Ki Dun, two or three trekkers to a tent with sleeping bags and insulated mats, plus a dining tent and toilet tent. Some itineraries use a homestay or forest rest house at Osla instead of tents at Seema. Food is simple, hot and vegetarian, cooked by the trek crew: porridge, eggs and paratha in the morning, a packed or hot lunch, and dal, rice, roti and vegetables in the evening, with frequent tea. There is limited to no mobile signal beyond Sankri, so plan to be offline and leave your operator's contact with family.
What to pack
Pack for cold nights and changeable weather in every season. The core kit is waterproof, broken-in trekking boots, a 45 to 55 litre pack with a rain cover, thermal base layers, a fleece, a light down jacket, a windproof and waterproof shell and trousers, a warm hat, gloves and thick socks. Add sunglasses, sunscreen and lip balm for the glare, a headtorch with spare batteries, a one-litre water bottle with a purification method, quick-dry trekking trousers, a personal medical kit, and trekking poles for the descents and stream crossings. For winter departures add gaiters, heavier insulation and micro-spikes if your operator does not supply them. If a mule carries your main bag, keep water, snacks, warm and waterproof layers on you in a daypack.
The villages and trekking responsibly
Har Ki Dun passes through inhabited country, and how trekkers behave here matters. Osla and Gangad are small, conservative farming villages; ask before photographing people or homes, dress modestly, and buy tea, snacks or a meal from village households where you can, since that income stays local. The route is inside a wildlife sanctuary, so carry out every piece of non-biodegradable waste including food scraps and tissue, use only established campsites, never light open fires, and keep to the trodden path. Choose an operator on their safety and environmental record rather than price — our guide on choosing a trekking operator in Uttarakhand covers what to ask — and take trekking travel insurance that covers evacuation, as explained in our travel insurance guide.
Combining Har Ki Dun with other treks
From the same Sankri base, the Kedarkantha snow summit is the obvious pairing, and the two make a strong week-and-a-half trip together. Trekkers who finish Har Ki Dun wanting a harder route often look at the Ruinsara Tal and Bali Pass extension from the same valley. For another long green-valley trek, the Valley of Flowers is the monsoon counterpart, and the Gaumukh Tapovan trek to the source of the Ganga is a natural next step up in altitude. For meadows rather than a valley, see the Dayara Bugyal and Brahmatal treks. The full set is on our treks page.
Permits and practical notes
The trek lies within the Govind Wildlife Sanctuary, so a forest entry permit, camping charges and camera fees apply, all arranged by a registered operator, who also carries the required identification and safety equipment. Carry a government photo ID for the check post at Sankri. Foreign nationals face additional registration near the inner-line areas of this district and should confirm current requirements before travelling. Mobile connectivity, ATMs and reliable power all stop at Sankri, so carry enough cash and charge everything before the trek starts.
