Pilgrimage can't be denied as being a ritual, but it also can't be proved that it is a ritual. I think that the journey that a pilgrim goes on is to do entirely with your faith and faith is'nt a ritual. But in World youth day the activities that you participate in are can be classified as rituals. So overall it's really a belief thing.
throwing stones at pillars
There is no ritual pilgrimage in Judaism today, however it has become a customary pilgrimage to visit Israel at least once in a lifetime.
Sikhs do not believe in "blind ritual" such as pilgrimage
No, it is not necessary to perform the head shave ritual during the Umrah pilgrimage, but it is a recommended practice for those who are able and willing to do so.
Islam
The Islam distinguishing ritual is any of the Islam five pillars.Testimony of the oneness of God and that Muhammad is His messenger and prophetprayingAlmgiving (Zakat)FastingPilgrimage (Hajj)The world most distinguishing ritual is the Hajj (Pilgrimage)Refer to the related question below for more information.
To perform Hajj (pilgrimage) ritual worship
Muslims worship according to the Islam five pillars; including ritual praying, fasting, Alms giving, and pilgrimage. Refer to the related question below for more information.
Hagar ran seven times between the hills of Safa and Marwah in her search for water for her son, Ishmael. This act is commemorated in the Islamic ritual of Sa'i, performed during the Hajj pilgrimage. It symbolizes her faith and perseverance, and it is a key component of the pilgrimage rites.
a lesser pilgrimage is a pilgrimage that is lesser than the normal pilgrimage
An expeditionA pilgrimage
A pilgrimage is perceived to be religious in nature, but this is not the only type of pilgrimage, If you are a fanatical fan of anything, movies, auto racing, nature, skiing, surfing, diving, and so on attending an event or visiting these places that are critical to the sport/event/history can be considered a pilgrimage.