Earth Sandwich / City antipodes / Mexico City

Antipode finder · Mexico

The antipode of
Mexico City.

Draw a straight line from Mexico City (19.43° N, 99.13° W) through the centre of the Earth and it comes out at 19.43° S, 80.87° E, in the Indian Ocean, 1,614 km from the nearest dry land, off the coast of the British Indian Ocean Territory. The other slice of an Earth sandwich would sink.

Two globes: one centred on Mexico City, one centred on its antipode at 19.43° S, 80.87° E
Above Mexico CityAbove the antipode
Mexico City
19.43° N, 99.13° W · about 2,280 m above sea level · 12,294,193 people
Antipode
19.43° S, 80.87° E
What is there
The Indian Ocean; the sea floor there lies about 4,920 m below the surface
Nearest dry land
1,614 km from the antipode, on the coast of the British Indian Ocean Territory
Nearest town
Downtown, British Indian Ocean Territory · 1,634 km from the antipode
Nearest big city
Bandar Lampung · 3,065 km from the antipode
Sandwich verdict
SOGGY the other slice lands in open water
Nearest exact spot
2,068 km away, 35 km from Lamar, United States ⇄ 1,412 km from Port-aux-Français, French Southern Territories

Can you make an Earth sandwich from Mexico City?

No, not from Mexico City itself. The other slice would land in the Indian Ocean, 1,614 km from the nearest dry land (the British Indian Ocean Territory), where the sea floor lies about 4,920 m below the surface. Boats do not count (Sandwich Law § 1.3).

The nearest place from which an exact Earth sandwich is possible is 2,068 km from Mexico City, 35 km from Lamar, United States. Its other slice would go down 1,412 km from Port-aux-Français, French Southern Territories.

How this was worked out: the antipode flips the latitude and moves the longitude by 180°. Land or sea comes from the OpenStreetMap coastline the map uses; the sandwich verdict and elevations come from the verifier's 0.2° grid (Natural Earth land, ETOPO 2022 relief); water names from Natural Earth; towns and populations from GeoNames. The city's position is GeoNames' point for it; a big city's suburbs spread tens of kilometres around that point, and the figures move with them. Generated 2026-09-29.