Sorry, for my not good english. There is the River Taff, 64,0km long.
The River Taff
river Taff starts in the Breacan beacons
The length of the River Taff is 64 km (40 miles).
The mouth of the River Taff is located in Cardiff Bay, Wales, where it flows into the Bristol Channel.
It is 1000000km long
Somewhere
Nantgarw is a village in Wales. It is on the River Taff.
South homedogs
The Taff The Usk just to name some
It is 64 km/40 mi long,
The River Taff, which is the origin of the nickname 'Taffy' given to Welsh people, is in south Wales.