Lots of Royal Roads

I've had the old black and white photo below for a long time and didn't really have a story to go along with it. A Blog post on Geo Mexico about a search for Camino Real and San Blas Nayarit got me wondering how many El Camino Real's are there. I mean El Camino Real sounds kinda special. The Royal Road is one translation but I believe it can also be The Kings Road .... basically a government road from here to there.  I don't understand how Nayarit could be a branch of either Mexico City to Colima or Mexico City to Santa Fe New Mexico Camino Real's.  Guess you'd have to read the book for that one

EL CAMINO REAL DE COLIMA "In 1524 the first viceroy of New Spain , Don Antonio de Mendoza ordered the construction of the historic Camino Real de Colima, which starting from the ancient Tenochtitlan, capital of the New Spain, to link to the Port of Manzanillo, through what is now the states of Michoacan, Jalisco and Colima. The monumental work was of enormous benefit to western Mexico and over the centuries contributed in its modern infrastructure today.

Now here is the El Camino I was familiar with besides the one in California

El Camino Real de Tierra Adentro 

Growing up in California and next to "El Camino" we got to know the stories of the string of missions from Baja California to north of San Francisco and the road connecting them.

And here's one across Texas (a branch)