Earth Sandwich / City antipodes / Isfahan

Antipode finder · Iran

The antipode of
Isfahan.

Draw a straight line from Isfahan (32.65° N, 51.67° E) through the centre of the Earth and it comes out at 32.65° S, 128.33° W, in the South Pacific Ocean, 860 km from the nearest dry land, off the coast of Pitcairn. The other slice of an Earth sandwich would sink.

Two globes: one centred on Isfahan, one centred on its antipode at 32.65° S, 128.33° W
Above IsfahanAbove the antipode
Isfahan
32.65° N, 51.67° E · about 1,560 m above sea level · 1,547,164 people
Antipode
32.65° S, 128.33° W
What is there
The South Pacific Ocean; the sea floor there lies about 4,040 m below the surface
Nearest dry land
860 km from the antipode, on the coast of Pitcairn
Nearest town
Adamstown, Pitcairn · 861 km from the antipode
Nearest big city
Auckland · 5,144 km from the antipode
Sandwich verdict
SOGGY the other slice lands in open water
Nearest exact spot
1,718 km away, 32 km from Jeddah, Saudi Arabia ⇄ 403 km from Otepa, French Polynesia

Can you make an Earth sandwich from Isfahan?

No, not from Isfahan itself. The other slice would land in the South Pacific Ocean, 860 km from the nearest dry land (Pitcairn), 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 1,718 km from Isfahan, 32 km from Jeddah, Saudi Arabia. Its other slice would go down 403 km from Otepa, French Polynesia.

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.