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The narrowest point of the Tennessee River is 10 1/2 ft wide.
The merced river's narrowest points are 5 to 6 ft wide.
The narrowest point in the UK runs from Hadrian's Wall to the English East Coast. It is 70 miles wide, or 274 kilometers.
Auckland is situated on an isthmus in the north of the North Island, the narrowest point of the island. It is New Zealand's largest city.
3 miles
26km at chelyabinks
Manhattan is 0.8 miles wide at its narrowest point, and 2.3 miles at its widest.
Scotland is approximately 274 miles wide at its widest point, from its eastern coast to its western coast.
At its narrowest point Idaho is 50 miles wide.
Auckland at it's narrowest is about 1 mile wide. This is from the Tamaki Estuary where it is crossed by Gt. South Road to the Manukau harbour at Otahuhu. At it's widest it about 12 miles from Bucklands beach to the Airport.
94 km at Illapel
The narrowest point of the channel is the Strait of Dover which is 34 km wide.