Bihar to Japan · 4,939 km · Compare travel & driving options
The straight-line distance from Siwan to Osaka is approximately 4,939 km (3,069 miles). By road, the distance increases to about 1,725 km due to terrain, highways, and road networks connecting Bihar to Japan.
The drive from Siwan to Osaka is a long one — approximately 1,725 km taking around 20 hrs 58 min. Plan at least one overnight halt. Fatigue driving on Indian highways is dangerous.
For official travel information, regulations, and booking services:
DGCA — Indian aviation authority
Passport Seva — Passport and travel documents