The territorial corridor of reference is traced between the sixth and seventh centuries by the monk Columbanus, born in Leinster (Republic of Ireland) in 540 AD, who carried out his monastic function in Bangor (Northern Ireland, United Kingdom). It extends across eight European states: the Republic of Ireland, the United Kingdom of Great Britain and Northern Ireland, France, Germany, Switzerland, Austria, Liechtenstein and Italy.

The following can be members of the Association, subject to authorization from the Coordination Committee:

• The Regions, Provinces, Municipalities, and Unions of Municipalities touched by the Columban Way, as well as all public institutions established by the laws of the various states to which they belong;
• Private, public, or mixed (public/private) associations and bodies, educational companies and institutions, and other bodies and associations with similar purposes in compliance with the provisions of the Art. 35 Legislative Decree 117/2017. All entities mentioned above can become members of the Association, provided they are located in the geographical areas mentioned in Article 5, that is, in territories intersected by the Columban Way, which actively contribute to achieving the Association’s objectives, and share the same goals. Additionally, they should provide operational, financial, material or immaterial support, in addition to the standard membership fees.

The following membership categories are foreseen:

• Founders: all the entities listed above that joined the Association by 8 March 2014;
• Ordinary: all the entities listed above joined the Association after 8 March 2014.
• “Supporters” without the right to vote at the meeting

The Coordination Committee may admit to membership of the Association as “Supporters” all those (public, private or mixed public-private organizations, educational institutions, private citizens, etc.) who, despite not being located along the territorial corridor, are in related to it in some way through memory or some connection with the figure of Saint Columban and wish to participate and support the Association’s projects.
To become a member, it is necessary to apply in writing to the Association’s headquarters; the application must indicate the reasons for and the declaration of sharing the aims of the Association.
The Coordination Committee decides admission to membership at the first available meeting.