It begins at your doorstep. This is to say that the whole Camino is the one that begins at your house and that there is no other place for the Camino to “begin.” If you cannot start from home, which is what commonly happens, start wherever works best given the amount of time you have available to walk or the place that is easiest for you to reach.
As a point of reference, keep in mind that to walk from Roncesvalles you need at least a month. From Somport, 35 days; from Logrono, 23 days; from Burgos, 20; from Leon, 16; from Ponferrada, 13.
Besides, now there are many other marked and signed routes to Santiago in addition to the Camino Frances (French Road) and its Aragonese branch. We can walk the Via de la Plata (Way of Silver), the Interior Camino, the Portuguese, the English, the Ruta de la Lana (the Wool Route), the Ebro Camino… If you are doing the Camino for the first time, follow the Camino Frances . The drawback is that it is the most traveled, but it is full of history, tradition, and spirituality wherever you step.