Assuming you have a smartphone (iPhone or Android) there are many sources for gps tracks. Here is just one post from the forum:
https://www.caminodesantiago.me/com...ks-of-all-portuguese-caminos-in-one-file.503/
There are also apps that you can use to download the maps. I used Geoperegrino, Peregrino Online, Wisely+, and others.
You have to see which one suits your needs and more importantly, the level of technical expertise to access the maps. Some are just a download once button, others have to be refreshed but have better information. I also just saw a post about someone who had put all of the caminos into an online gps set. Not sure if that is overkill or not or how hard it is to subset.
Also, be careful that you clearly understand for any app which require the internet to function and which just require a GPS signal (i.e. you download the maps before you start or at some wifi point and then use them as needed).