The narrowest point in the UK runs from Hadrian's Wall to the English East Coast. It is 70 miles wide, or 274 kilometers.
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.
3 miles
26km at chelyabinks
Manhattan is 0.8 miles wide at its narrowest point, and 2.3 miles at its widest.
Scotland is right around 275 miles long. It is 25 miles wide at its narrowest point and 155 miles wide at its broadest point.
At its narrowest point Idaho is 50 miles wide.
94 km at Illapel
The narrowest point of the channel is the Strait of Dover which is 34 km wide.
Mexico's narrowest point is known as the Isthmus of Tehuantepec. At its narrowest point, it stretches for 200 Km (124 miles), separating the Gulf of Mexico and the Pacific Ocean.
Great Britain is as wide as 90,504 square miles
the strait of Gibraltar is 14.3 km wide at its narrowest point. Morocco to Spain.