The passes are valid for off-peak travel to many locations, with individual passes covering different parts of the country.
Customers can also use the passes on selected TrawsCymru bus routes, adding to the range of connection and route options available.
The Explore Wales, Explore North and Mid Wales, and Explore South Wales passes offer four days of unlimited rail travel over an eight-day period.
The North and Mid Wales pass covers the Cambrian Line through Powys, plus the northern end of routes in England as far as Crewe and Chester. The Heart of Wales line covering Radnorshire is under the Explore South Wales pass.
Alternatively, the Explore West Wales and Explore Cambrian passes offer unlimited travel for a single day.
Victoria Leyshon, partnership marketing manager at TfW said: “Wales is a beautiful country to explore with lots of attractions and these unlimited rail passes provide visitors and local people with the opportunity to explore using the railway.
“The selection of passes available allow customers to travel from North Wales to South Wales with stops in between, or simply to explore just one region.
“There’s a pass available for everyone and we hope to encourage people to use them and travel sustainably.”
The passes can be purchased via the TfW website or app, from ticket offices, or onboard from a conductor.
