Paonta Sahib is A famous pilgrimage for Sikhs in Himachal and near about 70 km away from Dehradun and 110 away from mussoorie.
You can visit there any time of the day and pay a vow here. You can have GURU KA LANGAR here and rest for a while and can end your journey with last place itself.
It was a great experience to travel UTTARAKHAND on my Bike which was a bkke ride of near about 670 km from home to home in 5 Days. The Bike was Honda CBR 150R which consumed petrol of near about ₹ 1400 ( 77 per litre).