Network Rail has confirmed access to all main line platforms at Cardiff Central Station after yesterday's landslip.
First Great Western are operating full service, including additional services planned for the Olympic Football event in Cardiff this evening.
Passengers are warned that services on the Cardiff Valley lines are still subject to disruption, and Arriva Trains Wales has outlined an amended timetable for the rest of today.
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A group of ex-servicemen have become the first people to climb Pen y Fan in the Brecon Beacons for 24 hours non-stop.
Thousands of athletes are in Tenby for the competition which consists of a two mile swim, a 112 mile cycle ride and a marathon.