Costco – Cardiff – Opening Hours & Store Details Costco is easily accessible in Capital Retail Park on Leckwith Rd, approximately a 1.30 mile distance south-west from the centre of Cardiff (near Cardiff City Stadium). People can easily get here from Butetown, Riverside, Cardiff Town Centre, Caerau, Saltmead, Pontcanna, Grangetown and Canton. This page includes information for Costco Cardiff, including the working hours, street address or direct phone.