I am going to Japan in September and am planning to buy a three weeks JR pass. And I'm not too sure about how long to stay in each place. But I came to this result.
10/9-14/9 Tokyo
14/9-19/9 Okinawa
19/9-22/9 Fukuoka (activate the JR pass 22nd)
22-25 Hiroshima/Miyajima
25-28/9 Kobe/Osaka
28/9-2/10 Kyoto
2/10-5/10 Nagoya/Gifu
5-8/10 Gujo
8-10/10 Takayama/Shirakawago
11/10-14/10 Tokyo
Does this sounds reasonable?
Is it possibe to go to Koyasan for a daytrip from Osaka or Kyoto?