Day 1: Dehradun to Sankri - 190 KM drive in 8 hours
We start early from Dehradun and reach the village Sankri by evening. The final stretch is through the Govind Pashu National Park after we cross a check post at Netwar. We rest at night in a guest house.
Day 2: Sankri to Seema/Osla(2,700 m): 14 KM trek in 5 to 6 hours
Post breakfast we are transported from Sankri to Taluka. The drive is a bit bumpy. The trek commences from Taluka on a stony path. With the river Supin gushing through rapids beside us, under the shade of walnut, pine and other trees, the walk is quite pleasant. Often the passing villagers greet us on the way.
The path crosses over a few streams which merge with Supin. After a few hours of walk the village of Gangad can be seen towards the left, across the river. We continue our trek and after about an hour′s walk, the quaint village of Osla unfolds itself. Seema is a tiny settlement opposite to the river from Osla. We set camp here or stay in a hut with a local family in the village.
Day 3: Osla to Har ki Dun (3,510 m): 11 KM trek in 4 to 5 Hours
From Osla the trail gradually rises higher and passes through bushes of flowers like orchids, fleece flowers and sunflowers. The ascending path climbs high above the confluence of Supin river and the river from Ruinsara valley.
After traversing higher up along the left side of the river, we camp at a very panoramic spot in Har ki Dun, located at the junction of two valleys: one originating from Jaundhar glacier and the other from beyond Hata glacier.
Day 4: Explore Har ki Dun: 5 KM in 3 to 4 hours
We can choose to relax and soak in the environment or we have several trails as options.
The vast open meadows following the course of the Supin river can be explored. Further ahead of the meadows one can walk among the forests of Bhojpatra trees (Himalayan birch) or get a closer glimpse of the Jaundhar glacier and Swargarohini peak.
One can visit the Marinda Tal just 2km away from Har ki Dun. It is small glacial lake formed by a huge rock obstructing the river which flows down from Borasu pass.
The little-known valley of Hata can be explored which lies in between the above two valleys. It also has some large meadows and a close view of the Hata glacier and peak.
Day 5: Har ki Dun to Waterfall (3,330 m): 9 KM trek in 4 to 5 hours
In this day we initially follow the trail coming back from Har ki Dun to Osla. After about 1 km we follow a path downhill on our left which leads to a small bridge and cross over to the opposite side. The path is through a dense forest for about 2 km. Then it turns left and enters the Ruinsara valley. From here it takes about 2 hours to reach the camping ground near the waterfall.
Day 6: Waterfall to Ruinsara lake (3,600 m): 4 KM trek in 2 Hours
We ascend into the Ruinsara valley. There is a stark difference in the vegetation with pine and fir giving way to birch and rhododendron. Ruinsara lake is a lovely lake surrounded by meadows and rhododendron bushes. It is considered sacred by the locals. Since, the trek is short, we have sufficient time on this day to acclimatize and explore the trails nearby. Overnight in camps near the lake.
Day 7: Ruinsara lake to Thanga (3,810 m): 2 KM trek in 1 to 2 hours
We start the day early and can explroe the trail to Black Peak and Swargarohini basecamp before going towards our destination. We walk across the valley below Ruinsara lake and cross the river over a bridge. There is a steep ascent from the bridge to a ridge. The trail from here to the campsite passes through some beautiful meadows. We get a view of Swargarohini peak behind us from the campsite.The camp is set We camp below the pass along the glacial moraine. This is one of the best locations for a camp with the valley below and the pass behind you. Camping at this altitude is a new experience which very few treks offer.
Day 8: Thanga (3,810 m) to Bali Pass basecamp (4,400 m): 4 KM in 5 to 6 hours
From the camp we turn right and ascent towards the pass. The trails have boulders and rocks. After about 1.5 km, we walk on a narrow and ascending ridge which ends near our campsite. We camp below the pass along the glacial moraine. This is one of the best locations for a camp with the valley below and the pass behind you. Camping at this altitude is a new experience which very few treks offer.
Day 9: Bali Pass basecamp (4,400 m) to upper Dhamni (4,000 m) via Bali pass (4,900 m): 12 KM trek in 7 to 8 hours
We start very early, before sunrise on this. The steep climb to the pass commences just after a short walk. We reach the top of the pass by early morning. We get a gorgeous view of various peaks from here especially of the Banderpunch peaks on a clear day. From the pass, we descend down into the alpine zone and reach the camping grounds of upper Dhamni. This place has water nearby.
Day 10: Upper Dhamni to Yamunotri to Janki Chatti (2,400 m): 12 KM in 5 to 6 hours
You trek from Upper Dhamni to Yamunotri. Then you walk down to Janki Chatti. This is a very scenic pilgrim route. It goes through Himalayan forests.
You walk downhill in thick woods. You will cross streams and sunny spots. The trek ends at Yamunotri temple. Here you can take holy bath before mandir visit. You can hear the Yamuna River while praying
After visiting the temple, take the pilgrim path to Janki Chatti. This walk is about 5 to 6 km. It is an easy downhill section. You will see natural hot springs and small food stalls. The path is often busy with many trekkers and pilgrims. You will also see mules and carriers. Janki Chatti is at 2,400 meters. This busy town has simple eateries and guesthouses. It is a good place to stay the night.
Day 11: Janki Chatti to Dehradun: 180 KM drive in 7 to 8 Hours
The drive from Janki Chatti to Dehradun is about 180 kilometers. The roads are have curls and twisted. The trip takes seven or eight hours.
The route goes through Barkot. This is a busy town where people stop for tea or snacks. Then you drive toward Naugaon and Damta. The road between Janki Chatti and Barkot is narrow in places. It has sharp turns, so drivers must go slowly here.
After Barkot, the road gets wider and smoother. You will see deep valleys, thick forests, and small villages high up.
Traffic can be slow. This happens a lot during the Char Dham season when many pilgrims drive. Sometimes heavy rains cause road work or small landslides. It is safer to travel only during the day. Local drivers know the curves well. If you are new to driving in the mountains, watch out for quick stops and sharp turns.
Then you will reach to Dehradun. This city have good vibes and many best option to stay.