milk run
From Longman Dictionary of Contemporary Englishmilk runˈmilk run noun [countable] informal 1 British EnglishTRAVEL a familiar easy journey that you do regularly2 American English a train journey or regular plane flight with stops in many placesExamples from the Corpusmilk run• We took off on time, but we had unknowingly booked on to the milk run.