I read this thread with interest. This year will be the ninth year I have volunteered to work at the Pilgrim Office. Since 2014, I have missed only one year - due to the COVID situation.
As a consequence of this experience, I have learned well the policy / rules regarding who is eligible for the Compostela. Here they are - in bullet form - to make it crystal clear.
- A pilgrim must walk the FINAL 100 km into Santiago
- This distance must be on an APPROVED Camino route - the pilgrim office has a list of these routes.
- The route must END at the Cathedral in Santiago.
- The progress or this pilgrimage journey must be recorded on a suitable credencial (approved by the Cathedral authorities - Pilgrim Office). Daily diaries are not sufficient.
- The pilgrim must have affixed in their credencial TWO SELLOS (rubber stamps) each day while on their journey. These stamps must be in chronological order and demonstrate that the pilgrim walked in a logical order on their pilgrimage route into Santiago. Beyond 100 km, a single sello is acceptable.
I have seen exceptions made due to circumstances beyond a pilgrim's control. For example, eight pilgrims are walking in a group. They follow the exact same route and stay at the exact places. One of the eight pilgrims in the group loses their credencial a night or two before Santiago. All reasonable attempts to find the credencial are futile. I have seen authorities accept a replacement credencial affirmed to by all the other members of the group.
I have also seen long distance pilgrims, coming from St. Jean Pied de Port, or farther away, granted a Compostela, even if they did not have more than a single sello for every single one of their final days into Santiago. The office staff and volunteers can examine the pilgrim, their credencial, story and gear to readily determine wether this person did in fact go the entire distance.
This even happened to me on my second Camino from France in 2014. I forgot to get the second stamp on two of the final five-days. But, the entirety of my presentation more than supported the fact that I had walked the entire route. Long distance pilgrims, look, act, and sometimes smell different that short distance pilgrims. Their gear and clothing also show signs of having been on Camino for a longer period of time,.
Exceptions are VERY rare - but they do happen. There is no rule book for granting exceptions. The staff use experience and common sense to determine when, where and how to grant any exception to the rules above. They are not cruel and heartless. They are trying to enforce reasonable standards equally.
Bottom line - follow the rules I listed above. you will have no problem getting a Compostela for walking a minimum 100 km pilgrimage into Santiago. For bicyclists, the distance is 200 km. On a horse - 100 km. Riding a horse brings with it challenges that make the journey more difficult than riding a bicycle.
I my experience, people seem to have problems when they say they started at Muxia or Finisterre, then walked over 100 km on a "higgly piggly" route of their own contrivance to finally arrive at Santiago. The problem is not that they did not walk 100 km or more. The problem is that the route they followed is not an approved Camino route. The process for acceptance as a Camino route is a long one and carefully managed by the Cathedral authorities.
I hope this helps clarify matters.
Tom