Pentraeth railway station was situated on the Red Wharf Bay branch line between Holland Arms railway station and Benllech, the third station after the line branched from the main Anglesey Central Railway. Opening on 1 July 1908, a quarter of a mile out of the village it was one of the two largest stations on the line. On the Up (east) side of the line stood the 120ft (40 metre) platform with several associated huts. Unlike the previous two stations Ceint and Rhyd-y-Saint this was manned, albeit by a maximum of two staff at any one time.