For my own reference more than anyone else's

Here's the list of cities that The Very Most have played in:

Idaho
Boise
Garden City
Meridian
Nampa
Caldwell
Mountain Home
Pocatello
Rexburg
Hailey
Fairfield
Moscow

Utah
Logan
Salt Lake City
Provo

Washington
Kennewick
Olympia
Spokane
Spokane Valley
Seattle
Bellingham
Pullman
Walla Walla

Oregon
Portland
La Grande

United Kingdom
Glasgow, Scotland

Republic of Ireland
Dundalk
Dublin