What is the motorable route?
Haridwar - Rishikesh - Devprayag - Srinagar - Rudraprayag - Karnaprayag - Nandprayag - Chamoli - Pipalkoti - Helang - Lyari - Devgram
Total Distance - 275 kilometres, approximately
Earlier, the trek to Kalpeshwar started from Lyari as the road till Devgram was still under construction. Now, I'm told, the road has been completed although it's not a firm one and not always open.
The road from Haridwar to Helang is more or less well-maintained except for a few patches that fall under the landslide zone.
But it is not going to be a cakewalk driving from Helang to Devgram. It is not a road but a trail of loose (mostly) soil and rocks that is prone to breaking apart. It is advised that you keep driving till Joshimath (14 kilometres from Helang), park your vehicle there and then take a shared jeep to Devgram via Helang. Unless you are a pro at off-roading!
This more than sorts it out in case you are driving your own vehicle or a self-drive vehicle.