WKO5 parses the most common workout file types (click here for a full list). However, workout files from Garmin Forerunner watches (including the Garmin FR 620, FR 735, FR 945, and FR 920) cannot currently be imported directly into WKO5. We are working on a solution, and in the meantime, the workaround is to load or auto sync your Forerunner workouts to TrainingPeaks and download them into WKO5 through a TrainingPeaks account.