(Canada - Alberta) GPS Adventures Canada - Three Hills, Alberta

GPS Adventures Canada - Three Hills, Alberta

(Canada - Alberta) GPS Adventures Maze Exhibit TELUS World of Science

GPS Adventures Maze Exhibit TELUS World of Science

(Canada - British Columbia) GPS Adventures Maze Canada - Abbotsford, BC

GPS Adventures Maze Canada - Abbotsford, BC

(Canada - Nova Scotia) GPS Adventures Maze Exhibit Discovery Centre

GPS Adventures Maze Exhibit Discovery Centre

(Canada - Ontario) GPS Adventures Canada - Dynamic Earth

GPS Adventures Canada - Dynamic Earth

(Canada - Ontario) GPS Adventures Exhibit - Ontario Science Centre

GPS Adventures Exhibit - Ontario Science Centre

(Canada - Ontario) GPS Adventures Maze Exhibit– The Children’s Museum

GPS Adventures Maze Exhibit– The Children’s Museum

(Europe - Austria) GPS MAZE EUROPE - Austria

GPS MAZE EUROPE - Austria

(Europe - Czech Republic) GPS MAZE EUROPE - Czech Republic

GPS MAZE EUROPE - Czech Republic

(Europe - Czech Republic) GPS MAZE EUROPE 2020 - Prague

GPS MAZE EUROPE 2020 Prague – Edition 2022

(Europe - France) GPS MAZE ADVENTURES - France

GPS MAZE ADVENTURES 2022 - France

(Europe - Germany) GPS MAZE EUROPE - Germany

GPS MAZE EUROPE - Germany

(Europe - UK) GPS MAZE EUROPE - United Kingdom

GPS MAZE EUROPE - United Kingdom

(USA - Alabama) GPS Adventures Exhibit: U.S. Space & Rocket Center

GPS Adventures Exhibit: U.S. Space & Rocket Center

(USA - Arkansas) GPS Adventures Arkansas - ASU Museum

GPS Adventures Arkansas - ASU Museum

(USA - Arkansas) GPS Adventures Arkansas - Discovery Place 

GPS Adventures Arkansas - Discovery Place

(USA - Arkansas) GPS Adventures Arkansas - Museum of Discovery 

GPS Adventures Arkansas - Museum of Discovery

(USA - Arkansas) GPS Adventures Arkansas - U of A Discovery Zone

GPS Adventures Arkansas - U of A Discovery Zone

(USA - Arkansas) GPS Adventures Arkansas Maze Exhibit

GPS Adventures Arkansas Maze Exhibit

Never did find a source to list out the Groundspeak (USA and Canada) and the Europe ones so made a list. 

So far
21 in USA (6 from Arkansas) with USA now having new events
6 in Canada
2 in Europe

List of all GPS Adventure Mazes

List of all GPS Adventure Mazes.list-details-1ub8b9x{text-transform:uppercase;font-size:12px;}@media screen and (min-width: 600px){.list-details-1ub8b9x{font-size:1.25rem;}}.list-details-1ub8b9x.shareable{color:#87705a;}.list-details-1ub8b9x.public{color:#00b265;}Public

List of all GPS Adventure MazesPublic