There is some more info about this camino and how it merges with the one coming from Castelló in this link:
Vinaroz adecua el
Camino de Santiago al Baix Maestrat, a través de un recorrido dividido en tres etapa y que une la costa mediterránea con Els Ports.
camino.gal
Curiously enough, all the people that I know who started their camino in Vinaròs (their home town) took another route: from Vinaròs to Tortosa and from there on the Ebro route to Logroño. This also makes a lot of sense and is the first option that has come to my mind when reading the title of the thread. Although Vinaròs is in the Valencian Autonomous Region, it belongs to the diocese of Tortosa (Catalan Autonomous Region), as is the case of most (if not all) towns in Baix Maestrat. This, in fact, has had plenty of sociocultural implications in this region.
In any case, both ways should be just wonderful. In particular, Morella (in the Castelló route) and all the little villages nearby are just
so beatiful ...
Some more info on the Castelló route can be found here
Iniciamos la construcción y desarrollo en nuestras páginas del Camino de Castellón, que empalma con el Camino del Bajo Aragón, y enlaza con la Ruta del Ebro, justamente a la altura de la localidad de Fuentes de Ebro. Nace esta preciosa e interesante ruta en la Plana de Castellón, a los pies del...
www.mundicamino.com
It merges with the Baix Maestrat route in stage 4:
Iniciamos la construcción y desarrollo en nuestras páginas del Camino de Castellón, que empalma con el Camino del Bajo Aragón, y enlaza con la Ruta del Ebro, justamente a la altura de la localidad de Fuentes de Ebro. Nace esta preciosa e interesante ruta en la Plana de Castellón, a los pies del...
www.mundicamino.com
I hope you enjoy the route (and the planning)!