Earth Sandwich

Earth Sandwich / City antipodes / Sendai

Antipode finder · Japan

The antipode of
Sendai.

Draw a straight line from Sendai (38.27° N, 140.87° E) through the centre of the Earth and it comes out at 38.27° S, 39.13° W, in the South Atlantic Ocean, 1,326 km from the nearest dry land, off the coast of Brazil. The other slice of an Earth sandwich would sink.

Two globes: one centred on Sendai, one centred on its antipode at 38.27° S, 39.13° W
Above SendaiAbove the antipode
Sendai
38.27° N, 140.87° E · about 40 m above sea level · 1,096,704 people
Antipode
38.27° S, 39.13° W
What is there
The South Atlantic Ocean; the sea floor there lies about 5,000 m below the surface
Nearest dry land
1,326 km from the antipode, on the coast of Brazil
Nearest town
Mostardas, Brazil · 1,338 km from the antipode
Nearest big city
Porto Alegre · 1,439 km from the antipode
Sandwich verdict
SOGGY the other slice lands in open water
Nearest exact spot
1,359 km away, 33 km from Ponggae-dong, South Korea ⇄ 30 km from Santa Vitória do Palmar, Brazil

Can you make an Earth sandwich from Sendai?

No, not from Sendai itself. The other slice would land in the South Atlantic Ocean, 1,326 km from the nearest dry land (Brazil), where the sea floor lies about 5,000 m below the surface. Boats do not count (Sandwich Law § 1.3).

The nearest place from which an exact Earth sandwich is possible is 1,359 km from Sendai, 33 km from Ponggae-dong, South Korea. Its other slice would go down 30 km from Santa Vitória do Palmar, Brazil.

Check Sendai on the map Check any spot

Sendai is on the Okinawa & Jeju ↔ southern Brazil corridor. Its guide lists where every city on both sides lands and how to make an Earth sandwich there.

Nearby cities

All large cities in Japan

On the far side

No city above a million people lies within 600 km of the antipode of Sendai.

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.