Gresham/Ebetsu
Eugene/Kakegawa
Florence/Yamagata
Madras/Tomi
Ontario/Osakasayama
Roseburg/Kuki
Milwaukie/Iwaki
Pendleton/Minamisoma
Oregon City /Tateshina
Newberg/Asago
Coos Bay/Chōshi
Wilsonville/Kitakata
Camas/Taki
Seaside/Shakotan
Forest Grove/Nyuzen
Lake Oswego/Yoshikawa
Newport/Monbetsu
Canby/Iwamizawa
Hood River/Tsuruta
Hillsboro/Fukuroi
Portland/Sapporo
Camas/Hamamatsu
Beaverton/Gotemba
The Dalles/Miyoshi
Salem/Kawagoe
Vancouver/Joyo
Ebetsu/Gresham
Kakegawa/Eugene
Yamagata/Florence
Tomi/Madras
Osakasayama/Ontario
Kuki/Roseburg
Iwaki/Milwaukie
Minamisoma/Pendleton
Tateshina/Oregon City
Asago/Newberg
Chōshi/Coos Bay
Kitakata/Wilsonville
Taki/Camas
Shakotan/Seaside
Nyuzen/Forest Grove
Yoshikawa/Lake Oswego
Monbetsu/Newport
Iwamizawa/Canby
Tsuruta/Hood River
Fukuroi/Hillsboro
Sapporo/Portland
Hamamatsu/Camas
Gotemba/Beaverton
Miyoshi/The Dalles
Kawagoe/Salem
Joyo /Vancouver
State of Oregon/Toyama Prefecture
Toyama Prefecture/State of Oregon