Earth Sandwich / City antipodes / Santiago

Antipode finder · Chile

The antipode of
Santiago.

Draw a straight line from Santiago (33.46° S, 70.65° W) through the centre of the Earth and it comes out at 33.46° N, 109.35° E, on dry land in China, 32 km from Qianyou. An exact Earth sandwich is possible.

Two globes: one centred on Santiago, one centred on its antipode at 33.46° N, 109.35° E
Above SantiagoAbove the antipode
Santiago
33.46° S, 70.65° W · about 520 m above sea level · 4,837,295 people
Antipode
33.46° N, 109.35° E
What is there
Dry land in China
Nearest town
Qianyou, China · 32 km from the antipode
Nearest big city
Xi’an · 97 km from the antipode
Sandwich verdict
EXACT land lies opposite land
Elevation bonus
+1,680 m (520 m here, 1,160 m there)

Can you make an Earth sandwich from Santiago?

Yes: an exact Earth sandwich. Santiago is one of the few large cities with dry land directly opposite it. The grid that verifies submissions rates the spot exact: put a slice down in Santiago and have a friend put one down 32 km from Qianyou, China at the same UTC minute, and the whole planet is the filling. The elevation bonus would be about 1,680 m: Santiago sits about 520 m above sea level and the other slice about 1,160 m above sea level.

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.