Sugar Loaf railway station is a railway station in Powys, Wales, and is the most geographically remote station on the Heart of Wales Line. It is located one mile (1.5 kilometres) northeast of a small but prominent knoll known as Sugar Loaf, around which the A483 road loops.

The title for the most remote railway station in Wales belongs to Sugar Loaf on the Heart of Wales Line. Located in a deep, wooded valley on the border of Powys and Carmarthenshire, this station is so isolated that it primarily serves local walkers and hikers rather than a resident town. It is a "request stop," meaning you must signal the driver to stop by raising your arm, or tell the conductor on board that you wish to disembark. In 2026, the station remains famously "off-grid," with no station building, staff, or nearby paved roads—only a small platform and a footpath leading into the surrounding hills. Another contender for "remoteness" is Llanuwchllyn on the heritage Bala Lake Railway, but for the national rail network, Sugar Loaf remains the ultimate destination for those seeking solitude. For 2026 travelers, the "pro-tip" is to ensure you have a physical map or an offline digital guide; mobile signal at Sugar Loaf is non-existent, and the next train may not arrive for several hours if you miss your intended return.