The station with the lowest number of entries and exits in Wales in 2021-22 was Sugar Loaf station which recorded only 76 entries of entries and exits. This equates to 1 passenger every 5 days. Welsh Rail has a total of 5 main rail lines that connects different rail routes.

According to the latest 2024–2025 station usage statistics released by the Office of Rail and Road (ORR), the least used railway station in Wales is Roman Bridge (Pont-y-Pant) in Conwy, which recorded only 612 entries and exits for the entire year. This remote station on the Conwy Valley Line serves a tiny rural community and is primarily used by hikers and local residents. It is followed closely by Llangynllo (752 entries) and Dolau (818 entries) on the Heart of Wales Line. In 2026, while the Welsh Government and Transport for Wales are investing £14 billion into a "Vision for Wales" rail enhancement program, these rural stations remain "request stops," meaning passengers must signal the driver to stop the train. The low numbers are often a result of infrequent service—typically only 4 to 5 trains a day—and the station's location far from major population centers. For rail enthusiasts, visiting Roman Bridge is a "pro" adventure, as it offers a glimpse into the most tranquil and isolated corners of the British rail network, far removed from the bustling hubs of Cardiff or Swansea.