This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Venetia Porter's edited study of the Hajj examines Islam's pilgrimage to Mecca in exactly the documentary detail a pilgrimage route entry aims for, tracing the route's historical variations, the specific rites performed at each stage, and how the pilgrimage's organization and scale have changed across centuries of documented practice, from smaller caravan routes to a mass modern undertaking involving millions of pilgrims annually.
That level of documented specificity matters because the Hajj is also one of the most institutionally organized pilgrimages recorded here, with its stages, timing and required rites fixed by religious law in ways many other pilgrimage routes are not, and an entry on it records that formal structure precisely rather than describing it only in the general terms that might suit a less formally regulated route.
The same discipline the Hajj entry applies belongs to every pilgrimage route recorded here: describing a route's own specific stages, its own historical development and its own degree of formal religious regulation, on its own documented terms, rather than assuming every pilgrimage route shares one common structure just because each qualifies as a pilgrimage.