Events Map Events in Gaston, Oregon Oregon’s Tualatin Valley is rich with events that celebrate the bounty and diversity our region has to offer. Overview Calendar Map Map Event Destinations in Gaston, Oregon Select a City All CitiesAlohaBanksBeavertonBuxtonCorneliusDurhamForest GroveGastonHillsboroKing CityNorth PlainsPortlandSherwoodTigardTualatinWilsonville Category Activities Date Range Filters Sort