Strait of Gibraltar.
You are probably thinking of the Straits of Gibraltar
It is only 21 miles from Continental Europe at the Dover Strait.
The Ural Mountains form the natural boundary between Europe and Asia, stretching from the Arctic Ocean to the Ural River. They are traditionally considered the dividing point between the two continents.
A narrow point of land extending into water is called a "peninsula." Peninsulas are typically surrounded by water on three sides and connected to a larger landmass on the fourth side. Examples include the Florida peninsula in the United States and the Iberian Peninsula in Europe.
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You would be on the English Channel - which is 22 miles wide at its narrowest point.
The Ural Mountains are known for separating the continents of Europe and Asia. The Ural Mountains are known for being 1500 miles wide and the highest point is Mount Narodnaya.
The English Channel separates Great Britain from Europe. It is a narrow body of water that is about 21 miles wide at its narrowest point (Strait of Dover) and connects the North Sea to the Atlantic Ocean.
The body of water that separates Britain from mainland Europe is the English Channel. It is a narrow stretch of water that connects the Atlantic Ocean to the North Sea. The channel is approximately 21 miles wide at its narrowest point.