Bus
₹80–₹140
2.3h
Train
Jamalpur Jn (JMP)Gaya Jn (GAYA)
15620 Kamakhya–Gaya Weekly Express · 3A · 196 km
₹580–₹690
4h
Train
Gaya Jn (GAYA)Najibabad Jn (NBD)
12357 Kolkata Chitpur–Amritsar Durgiana SF Express · 3A · 1034 km
₹1,920–₹2,240
14.4h
Shared jeep
Najibabad JnJoshimath
Shared Sumo/Bolero · 325 km
Shared jeeps leave the stand between 05:00 and 07:00 and then stop for the day. Be early or lose a day.
₹910–₹1,460
14.1h
Night halt
₹1,050–₹2,050
overnight
On foot
GovindghatGhangaria
13 km on foot · 3050 m
Porter or mule support runs ₹800–1,200 per day if you need it.
free
7h
Total for 1 traveller: ₹4,690–₹6,880 one way
Does this look right?

