It is currently not possible to see all episodes of all of the shows, but here is what I have gathered so far:
放浪記 (ep 947 and up): https://video.unext.jp/title/SID0011778
放浪記 (mix of episodes): https://www.bilibili.com/video/BV1L7411x7KT
北海道ぶらり街めぐり (first 15 eps and three newer ones): https://video.unext.jp/title/SID0056290. More eps are available on the jptv tracker
北海道港町めぐり: Can only be found on the jptv tracker which requires an invite and these are screen captures. No other source currently exists.