The Snowdon Mountain Railway (SMR) is a narrow gauge rack and pinion mountain railway in Gwynedd, north-west Wales. It is a tourist railway that travels for 4.7 miles (7.6 km) from Llanberis to the summit of Snowdon, the highest peak in England and Wales.
The SMR is the only public rack and pinion railway in the United Kingdom, and after more than 100 years of operation it remains a popular tourist attraction. The line is owned and operated by Heritage Great Britain plc, operators of several other tourist attractions in the United Kingdom.
The railway is operated in some of the harshest weather conditions in Britain, with services curtailed from reaching the summit in bad weather and remaining closed during the winter from November to mid-March. Single carriage trains are pushed up the mountain by either steam locomotives or diesel locomotives. It has also previously used diesel railcars as multiple units.
In peak periods it is possible that queues will form but tickets can be booked in advance of the day of travel and collected from a dedicated window in the ticket office without queuing. If travelling in peak times or on fine weather days it is advisable to get to the station as early as possible as at busy times it is possible for all trains to be sold by early afternoon.
Single tickets up can be purchased in the ticket office at Llanberis or in advance by telephone with a credit/debit card ( subject to a £3.50 booking fee).
Single tickets down are only available on a standby, first come, first served basis at the destination station of the day ( Summit or Clogwyn ) and walkers should be aware that there is no guarantee of there being trains with available seats on the mountain at any given time. Therefore, if you walk up, you should bear in mind that you may have to walk down as well.