Earth Sandwich / City antipodes / San Diego
Antipode finder · United States
The antipode of
San Diego.
Draw a straight line from San Diego (32.72° N, 117.16° W) through the centre of the Earth and it comes out at 32.72° S, 62.84° E, in the Indian Ocean, 1,439 km from the nearest dry land, off the coast of Mauritius. The other slice of an Earth sandwich would sink.
- San Diego
- 32.72° N, 117.16° W · about 40 m above sea level · 1,404,452 people
- Antipode
- 32.72° S, 62.84° E
- What is there
- The Indian Ocean; the sea floor there lies about 4,760 m below the surface
- Nearest dry land
- 1,439 km from the antipode, on the coast of Mauritius
- Nearest town
- Saint-Philippe, Reunion · 1,443 km from the antipode
- Nearest big city
- Antananarivo · 2,163 km from the antipode
- Sandwich verdict
- SOGGY the other slice lands in open water
- Nearest exact spot
- 1,447 km away, 30 km from Lamar, United States ⇄ 1,407 km from Port-aux-Français, French Southern Territories
Can you make an Earth sandwich from San Diego?
No, not from San Diego itself. The other slice would land in the Indian Ocean, 1,439 km from the nearest dry land (Mauritius), where the sea floor lies about 4,760 m below the surface. Boats do not count (Sandwich Law § 1.3).
The nearest place from which an exact Earth sandwich is possible is 1,447 km from San Diego, 30 km from Lamar, United States. Its other slice would go down 1,407 km from Port-aux-Français, French Southern Territories.
San Diego is on the The US & Canada ↔ the southern Indian Ocean corridor. Its guide lists where every city on both sides lands and how to make an Earth sandwich there.
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.