Chile spans approximately 2,670 miles (4,300 kilometers) from its western coastline along the Pacific Ocean to its eastern border with Argentina. This remarkable length makes Chile one of the longest north-south countries in the world, while its width from west to east is relatively narrow, averaging around 100 miles (160 kilometers).
about 100 miles
It is 42,000 miles from east to west.
Chile is a long narrow country. If, by "left to right" you mean west to east, then you are measuring its WIDTH, not length. It is roughly 250 miles west to east, but over 2,000 north to south.
Width (longest distance, east to west): 357 miles
Wyoming is approximately 360 miles east to west.
West
145 mile from EAST to WEST
Mississippi is approximately 170 miles wide from east to west.
The Philippines extends approximately 1100 miles from east to west.
east-west (4319.4 km)
400 miles
It is 380 miles.