Dhanaulti is about 28 km from Mussoorie on the Mussoorie-Chamba highway. It is well connected with the capital of Uttarakhand, Dehradun approx 60 kms through buses and local taxi. One way charge for local taxi would be INR 1,700. You can get taxis and buses to Dhanaulti right outside the Dehradun railway station.
Dehradun is also well connected with Indian capital New Delhi through trains, buses and flights. There are three daily trains from Delhi approx 240 kms. There are numerous buses to Dehradun however train journey is more comfortable.