I suppose it is good to start early considering possible crowdedness with visitors (because 15 May will be a Sunday); even so, if you start from Tateyama before 8:00 you can arrive to Ogizawa earlier than 17:00, I guess.
Where in Tokyo is your destination?
Which station on what line is close to it?
- Tateyama Kurobe Option Ticket (One-way)
http://www.jrtateyama.com/e/: This discount ticket is available exclusively for foreign visitors who have entered Japan under "Temporary Visitor" status of residence.
The last express bus for Nagano Station is scheduled to depart at 16:30 from Ogizawa.
Ogizawa bus stop 16:30
| [Express bus]
|
http://www.alpico.co.jp/access/express/nagano_omachi/| (You cannot get off this bus at Shinano-Omachi.)
18:15 Nagano Station East Entrance bus terminal;
Nagano Station 18:59
| [JR Hokuriku Shinkansen: Kagayaki 512]
20:24 Tokyo Station.
The route until Nagano Station is covered by the discount ticket.
The cost to travel from Nagano Station to Tokyo Station by Shinkansen will be 8200 yen.
The last local bus for Shinano-Omachi Station is scheduled to depart at 17:55 from Ogizawa.
Ogizawa bus stop 17:55
| [Local bus]
|
http://www.alpico.co.jp/access/hakuba/ogizawa/18:30 Shinano-Omachi Station bus stop;
Shinano-Omachi Station 19:02
| [JR line: Local train]
19:53 Matsumoto Station 20:00
| [JR lines: Limited Express Super Azusa 36]
22:37 Shinjuku Station.
The route until Shinano-Omachi Station is covered by the discount ticket.
The cost to travel from Shinano-Omachi Station to Shinjuku or Tokyo Station will be 7650 yen.