I'm traveling to Japan soon and would like to bike both the aforementioned trails. It seems that Shimanami Kaido has facilities available at the endpoints (Onomichi, Imabari), and all along the route.
I'd like to explore the less-trekked Tobishimi Kaido as well but it seems the bike rentals don't overlap. Is there a reliable way other than using a rinko (bike bag) on the train to transport a rented bike (and possibly myself) from either Kure (the head of the Tobishimi Kaido route) to either Onomichi or Imabari? This route could also be completed in reverse where I would need to transport myself and bike ƒrom Onomichi/Imabari to Kure.