Vietnam
The length of the country, from North to South, is 1,650 kilometers (1,025 miles). "At its narrowest point, Vietnam is only 30 miles (48 kilometers) wide". Due to the long and narrow shape of Vietnam, the weather in the country varies considerably from north to south. Northern Vietnam offers a humid subtropical climate with four distinct seasons (winter, spring, summer, and fall) while Southern Vietnam is hot year-round.