Earth Sandwich / City antipodes / Rome

Antipode finder · Italy

The antipode of
Rome.

Draw a straight line from Rome (41.89° N, 12.51° E) through the centre of the Earth and it comes out at 41.89° S, 167.49° W, in the South Pacific Ocean, 717 km from the nearest dry land. The other slice of an Earth sandwich would sink.

Two globes: one centred on Rome, one centred on its antipode at 41.89° S, 167.49° W
Above RomeAbove the antipode
Rome
41.89° N, 12.51° E · about 40 m above sea level · 2,318,895 people
Antipode
41.89° S, 167.49° W
What is there
The South Pacific Ocean; the sea floor there lies about 4,680 m below the surface
Nearest dry land
717 km from the antipode
Nearest town
Waitangi, New Zealand · 773 km from the antipode
Nearest big city
Auckland · 1,622 km from the antipode
Sandwich verdict
SOGGY the other slice lands in open water
Nearest exact spot
739 km away, near Les Matelles, France ⇄ 37 km from Waitangi, New Zealand

Can you make an Earth sandwich from Rome?

No, not from Rome itself. The other slice would land in the South Pacific Ocean, 717 km from the nearest dry land, where the sea floor lies about 4,680 m below the surface. Boats do not count (Sandwich Law § 1.3).

The nearest place from which an exact Earth sandwich is possible is 739 km from Rome, 1 km from Les Matelles, France. Its other slice would go down 37 km from Waitangi, New Zealand.

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.