Day 1 - Dehradun Sightseeing.
Day 2 - Mussorie Sightseeing.
Day 3 - Dehradun/Mussorie to Sonprayag. Stay in Sonprayag.
Day 4 - Sonprayag to Kedarnath. Stay in Kedarnath.
Day 5 - Back to Sonprayag. Sonprayag to Chopta. Stay in Chopta.
Day 6 - Chopta Tungnath Trek.
Day 7 - Chopta to Nainital.
Day 7 - Nainital Sightseeing.
Day 8 - Nainital to Haridwar.
Day 9 & 10 - Haridwar & Rishikesh Sightseeing
Start from dehradun, then go to mussorie return same day to dehradun and leave for rishikesh. stay at night in rishikesh, spend next day here and in evening leave for haridwar, stay here overnight, spend a day in haridwar then next day early morning at 6:00 AM board a bus for gaurikund just outside haridwar bus station, you will reach gaurikund around 3:00 AM, take rest enjoy your resting day at gaurikund, then next day early start to trek to kedarnath, return by evening, stay at gaurikund. next day go to rishikesh. then take rest next day travel to haldwani. from haldwani go to naital, stay there, get up early go to munsiyari. stay there for 2 days , come back, and hit home if you are tired.
Hey you plan like this Day 1 Dehradun to Mussoorie & Dhanaulti (stay in dhanaulti, less crowded and so close to nature) Day 2 start your journey early today and from dhanolti you can take a Chamba- Tehri-Ghandayli-Tilwara- Augustmuni- Sonprayag ( night stay in Sonprayag) Day 3 Start your trek to Kedarnath temple ( you can hire a pony or opt of a helicopter ride or trek to temple which is around 21 kms) Stay near temple ( you have lot of options including GMVN dormitory) Day 4 Kedarnath to Sonprayag ( base point) you can go to Triyuginarayan temple, its where lord shiva & Parvati got married Day 5 Sonprayag to Rishikesh, you will cover Devaprayag also on your way to Rishikesh ( stay in Rishikesh) Day 6 You can go around Rishikesh, do some adventure activities, attend ganga aarti Day 7 Rishikesh to Haridwar Wherever you think you can increase your number of stays and explore the place