Hi Wendy!
You're certainly packing in a lot! Lets take a look at your costs:
- Narita airport terminal 1 > Tokyo: ¥3140, (62mins, 79km)
- Tokyo > Kyoto: ¥13420, (165mins, 513km)
- Kyoto > Osaka: ¥540, (28mins, 42km)
- Osaka > Nara: ¥780, (62mins, 48km)
- Nara > Osaka: ¥780, (55mins, 48km)
- Osaka > Hiroshima: ¥10150, (103mins, 345km)
- Hiroshima > Kobe: ¥10150, (103mins, 345km)
- Kobe > Osaka: ¥10150, (103mins, 345km)
- Osaka > Nikko: ¥18420, (318mins, 706km)
- Nikko > Nagano: ¥10980, (186mins, 311km)
- Nagano > Omagari(akita): ¥20370, (253mins, 772km)
- Omagari(akita) > Tokyo: ¥16510, (216mins, 610km)
- Tokyo > Narita airport terminal 1: ¥3140, (58mins, 79km)
TOTAL: ¥118530 for 13 legs
Well - there's no doubt that a rail pass will be good value here :)
Looking at recommendations, you have some pretty busy periods in there. Maybe I can suggest a slightly reduced itinerary?
For both financial and time reasons I would recommend you decide on either doing the trip to Omagari or the trip to Hiroshima and Nara. You have 9 days worth of specific travel days planned that needs to fit in a 7 day rail pass (excluding to/from the airport) - so no matter which way we cut it you're going to need to remove or compress some of your days. As your itinerary is pretty full already, I recommend removing rather than compressing further - you really don't want to spend all your time on the train!
Here is a suggested itinerary excluding Omagari with a few more days snowboarding in Shiga-kogen or in Tokyo, this itinerary also removes the Kobe stop from your plans. You have a few busy days of travel in here (Hiroshima day trip and Osaka to Nikko), but in general the spacing is pretty good. The 7 day rail pass starts from the 7th:
- Tokyo > Kyoto: ¥13420, (165mins, 513km)
- Kyoto > Osaka: ¥540, (28mins, 42km)
- Osaka > Nara: ¥780, (62mins, 48km)
- Nara > Osaka: ¥780, (55mins, 48km)
- Osaka > Hiroshima: ¥10150, (103mins, 345km)
- Hiroshima > Osaka: ¥10820, (109mins, 345km)
- Osaka > Nikko: ¥18420, (318mins, 706km)
- Nikko > Nagano: ¥10980, (186mins, 311km)
total: ¥65890 for 8 legs
This will all fit into a 7 day rail pass at ¥28,300 - a large saving of ¥37,590 over separate tickets
On top of this, you will need to purchase a return [N'EX/suica travel ticket combo] for your trip from and to the airport and some metro travel around Tokyo and the return bullet train from Nagano to Tokyo after snowboarding:
- Narita Express + metro card (N'EX+suica): ¥5,500 (this is by far the best deal for travel)
- Nagano > Tokyo: ¥8,170 (alternatively, you can get the bus from Nagano to Tokyo for around ¥4000)
extra tickets: ¥13,670
TOTAL SPEND ON TRAVEL: ¥28,300+¥13,670 = ¥41,970 per person
Phew! I know this isn't getting it all in to a 7 day pass, but I think this is about the best I can do without really limiting what you do on your trip.
Hope this helps!