Regional Symposia
Symposia are smaller conference-like events that are arranged outside the Plone Foundation's guidance and endorsement. The Plone Foundation is urging smaller conferences to occur in regional areas, and you don't need approval from the Foundation to arrange one of these - although they should at least have a bare minimum of professionalism - proper program, reasonable attendance fees, etc.
The Plone Symposium Midwest returns to Oshkosh, Wisconsin, USA for 2014!
Plone Symposium Tokyo 2015, the first Plone Symposium in an Asian country, is held this June.We'll have two days symposium, Saturday for the talk sessions and the dev sprint on Sunday. There are two tracks in talk sessions. Among them two keynote speakers from the Plone Foundation.

The First European Plone Symposium 2009 held in Sorrento. Seven days of "Ploning" in three different appointments
Learn invaluable lessons in an unforgettable environment
Plone Open Garden 2011, Sorrento, Italy
To be held at Penn State University in State College, Pennsylvania. Training sessions are March 10-11, 2008. Presentations March 12-13.
A regional Plone symposium in late May in central Pennsylvania, hosted by WebLion. There will be two days of talks (parallel tracks), two days of training, and a weekend of sprints. One of the major themes will be Plone in education.
WebLion’s regional Plone symposium returns to Penn State for a third year! The event will spotlight two days of talks, preceded by three days of training, and followed by 2 days of sprints.
The Plone community in South America organizes its regional Symposium yearly to share experiences and promote Plone