It is 1000000km long
Sorry, for my not good english. There is the River Taff, 64,0km long.
The River Taff
The mouth of the River Taff is located in Cardiff Bay, Wales, where it flows into the Bristol Channel.
river Taff starts in the Breacan beacons
The River Taff (Welsh - Afon Taf) flows through the City of Cardiff.
The length of the River Taff is 64 km (40 miles).
Dublin: Dodder, Tolka, Liffey Cardiff: Rhymney, Taff and Ely
the river taff is the longers river in whole wales
Cardiff Bay was created in 1987 by the Cardiff Barrage in South Cardiff. It is supplied the Taff and Ely rivers. It is 2,700 acres.
It is 64 km/40 mi long,
nicknames for people from wales are, a taff, taffy, sheep-shaggers, egg-chasers, Celts..... people from swansea - jacks people from Cardiff - taffs/taffy's people from west wales - Turks
There is no official national river of Wales, but the two best-known ones are the Dee (in the North, which opens out into the Dee Estuary) and the Taff, which flows through Cardiff. The latter is the reason why Welsh people are nicknamed 'Taffies'.