USC – Llanelli – Opening Hours & Store Details You’ll find USC on Parc Troste, a 0.96 mile driving distance south-east of the centre of Llanelli (not far from Llwynwhylwyg Terrace Bus Stop). People can easily get here from Trostre, Penceiliogi, Llanelli Town Centre, Llwynwhylwyg, Cwmcarnhywel, Cefncaeau, Penyfan and Bigyn. If you’d like to swing by today (Friday), it’s open from 9:00 am – 8:00 pm. For other information about USC Llanelli, including the open hours, store address and customer reviews, please refer to the sections on this page.