Earth Sandwich / City antipodes / Chengdu
Antipode finder · China
The antipode of
Chengdu.
Draw a straight line from Chengdu (30.67° N, 104.07° E) through the centre of the Earth and it comes out at 30.67° S, 75.93° W, in the South Pacific Ocean, 403 km from the nearest dry land, off the coast of Chile. The other slice of an Earth sandwich would sink.
- Chengdu
- 30.67° N, 104.07° E · about 520 m above sea level · 13,568,357 people
- Antipode
- 30.67° S, 75.93° W
- What is there
- The South Pacific Ocean; the sea floor there lies about 4,440 m below the surface
- Nearest dry land
- 403 km from the antipode, on the coast of Chile
- Nearest town
- Huentelauquén, Chile · 431 km from the antipode
- Nearest big city
- Santiago · 587 km from the antipode
- Sandwich verdict
- SOGGY the other slice lands in open water
- Nearest exact spot
- 403 km away, near Ganning, China ⇄ 48 km from Punitaqui, Chile
Can you make an Earth sandwich from Chengdu?
No, not from Chengdu itself. The other slice would land in the South Pacific Ocean, 403 km from the nearest dry land (Chile), where the sea floor lies about 4,440 m below the surface. Boats do not count (Sandwich Law § 1.3).
The nearest place from which an exact Earth sandwich is possible is 403 km from Chengdu, 2 km from Ganning, China. Its other slice would go down 48 km from Punitaqui, Chile.
Chengdu is on the China & Mongolia ↔ Argentina & Chile 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.