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at the observation spot on Biwako Ohashi bridge while jogging

About 1 hour jog.  From hotel to the other side of Biwako Ohashi bridge and come back.  These is an observation spot in the middle of the bridge

HP of Hotel  Lake Biwa Marriott Hotel

There are kinds of Shinkansen.  Nozomi is the fastest one between Tokyo and Hakata operated by JR Central and JR West.  Major stops from Tokyo are Shinagawa, Shin Yokohama, Nagoya, Kyoto, Osaka, Okayama, Hiroshima, Kokura, Hakata.  Some of them additionally stop at  Shin Kobe, Himeji, Fukuyama, Tokuyama, Shin Yamaguchi

HP of Central Japan Railway Company