WAlleycat raceWBenchmarking (hobby)WClueKeeperWDegree Confluence ProjectWGeocachingWGeocoinWGeograph Britain and IrelandWHash House HarriersWHidden MickeyWHumans vs. ZombiesWIngress (video game)WLetterboxing (hobby)WMunzeeWOn the Trail of the Golden OwlWOrienteeringWPeak baggingWPoker runWLetterboxing (hobby)WScavenger huntWThe Secret (treasure hunt)WTravel BugWZombies, Run!