Earth Sandwich / City antipodes / Rio de Janeiro
Antipode finder · Brazil
The antipode of
Rio de Janeiro.
Draw a straight line from Rio de Janeiro (22.91° S, 43.18° W) through the centre of the Earth and it comes out at 22.91° N, 136.82° E, in the Philippine Sea, 286 km from the nearest dry land. The other slice of an Earth sandwich would sink.
- Rio de Janeiro
- 22.91° S, 43.18° W · about 40 m above sea level · 6,747,815 people
- Antipode
- 22.91° N, 136.82° E
- What is there
- The Philippine Sea; the sea floor there lies about 4,040 m below the surface
- Nearest dry land
- 286 km from the antipode
- Nearest town
- Minamidaito, Japan · 652 km from the antipode
- Nearest big city
- Osaka · 1,317 km from the antipode
- Sandwich verdict
- SOGGY the other slice lands in open water
- Nearest exact spot
- 650 km away, near Guaratuba, Brazil ⇄ near Zaisho, Japan
Can you make an Earth sandwich from Rio de Janeiro?
No, not from Rio de Janeiro itself. The other slice would land in the Philippine Sea, 286 km from the nearest dry land, where the sea floor lies about 4,040 m below the surface. Boats do not count (Sandwich Law § 1.3).
The nearest place from which an exact Earth sandwich is possible is 650 km from Rio de Janeiro, 12 km from Guaratuba, Brazil. Its other slice would go down 17 km from Zaisho, Japan.
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.