Here's the time table for all the modes of transportation, going from the Nagano side.
https://www.alpen-route.com/_wp/wp-content/uploads/2024/04/2024-timetable-o-complete.pdf
Here's the time table from the Toyama side.
https://www.alpen-route.com/_wp/wp-content/uploads/2024/04/2024-timetable-t-complete.pdf
You don't have to reserve going back to Ogizawa. Just make sure you're on the last modes of transportation.
"This is a non-reserved bus; you cannot reserve a seat in advance. Please buy the ticket on the same day, before you board the bus. If you board the bus at a stop without a ticket counter, please purchase your ticket onboard. We normally add extra buses on busy days, but still cannot guarantee a seat for everyone. So if you are worried, please line up to board the bus early."
Bus from Nagano and back to Nagano. Just make sure all your times have connections! https://www.alpico.co.jp/en/timetable/tateyama_kurobe/r-nagano-omachi-ogizawa/
https://www.alpen-route.com/en/timetable/
Edited: 2:07 am, May 13, 2024