The driving time from Thunder Bay to Grand Rapids - Itasca County Airport (GPZ) is 5 hours 49 minutes by road. You can also find other options to travel from Thunder Bay to Grand Rapids - Itasca County Airport (GPZ) like bus, subway, tram, train and rail. To know the travel distances while planning a journey, find the
Distance from Thunder Bay to Grand Rapids - Itasca County Airport (GPZ)!