Earth Sandwich / City antipodes / Adelaide
Antipode finder · Australia
The antipode of
Adelaide.
Draw a straight line from Adelaide (34.93° S, 138.60° E) through the centre of the Earth and it comes out at 34.93° N, 41.40° W, in the North Atlantic Ocean, 1,027 km from the nearest dry land, off the coast of Portugal. The other slice of an Earth sandwich would sink.
- Adelaide
- 34.93° S, 138.60° E · about 40 m above sea level · 1,469,163 people
- Antipode
- 34.93° N, 41.40° W
- What is there
- The North Atlantic Ocean; the sea floor there lies about 3,640 m below the surface
- Nearest dry land
- 1,027 km from the antipode, on the coast of Portugal
- Nearest town
- Lajes das Flores, Portugal · 1,031 km from the antipode
- Nearest big city
- Queens · 2,903 km from the antipode
- Sandwich verdict
- SOGGY the other slice lands in open water
- Nearest exact spot
- 2,896 km away, 32 km from Hokitika, New Zealand ⇄ near Fisterra, Spain
Can you make an Earth sandwich from Adelaide?
No, not from Adelaide itself. The other slice would land in the North Atlantic Ocean, 1,027 km from the nearest dry land (Portugal), where the sea floor lies about 3,640 m below the surface. Boats do not count (Sandwich Law § 1.3).
The nearest place from which an exact Earth sandwich is possible is 2,896 km from Adelaide, 32 km from Hokitika, New Zealand. Its other slice would go down 4 km from Fisterra, Spain.
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.