To get to Rhondda Cynon Taf by car, use the M4 motorway and take either exit 32 or 34 depending on your exact destination. From Cardiff, it will take around 30-40 minutes to reach Rhondda Cynon Taf. Alternatively, you can take the A470 from Cardiff, which takes a bit longer but offers scenic views.
If you prefer to travel by rail, there are several train stations in Rhondda Cynon Taf, including Pontypridd, Treherbert, and Abercynon. You can take a train from Cardiff Central Station or any other station along the Valley Lines network.
If you're coming from other local landmarks, such as the Brecon Beacons or Swansea, taking the A465 Heads of the Valleys road is a good option for driving. For rail travel, you can take a train from Swansea to Neath and then change to the Valley Lines network.