The Taff Trail (Welsh: Taith Taf) is a popular walking and cycle path that runs for 55 miles between Cardiff Bay and Brecon in Wales. The trail follows the course of the River Taff, hence its name. The first eight miles of the trail which starts in Cardiff Bay follows the Taff corridor through the city via parks and green lanes to Castell Coch (Red Castle). From the fairy tale castle the trail continues through Taff's Wells and Nantgarw to Rhydyfelin and Glyntaff to reach the industrial heritage town of Pontypridd with its highlight of Ynysangharad Memorial Park. From Pontypridd the next major town is Merthyr Tydfil, home to imposing Cyfarthfa Castle. After Merthyr Tydfil the trail heads via mountain passes, stunning waterfalls and a series of reservoirs before finishing in Brecon.