Earth Sandwich / City antipodes / Gwangju
Antipode finder · South Korea
The antipode of
Gwangju.
Draw a straight line from Gwangju (35.15° N, 126.92° E) through the centre of the Earth and it comes out at 35.15° S, 53.08° W, in the South Atlantic Ocean, 103 km from the nearest dry land, off the coast of Uruguay. A sloppy Earth sandwich is possible.
- Gwangju
- 35.15° N, 126.92° E · about 120 m above sea level · 1,401,235 people
- Antipode
- 35.15° S, 53.08° W
- What is there
- The South Atlantic Ocean; the sea floor there lies about 40 m below the surface
- Nearest dry land
- 103 km from the antipode, on the coast of Uruguay
- Nearest town
- La Paloma, Uruguay · 113 km from the antipode
- Nearest big city
- Montevideo · 284 km from the antipode
- Sandwich verdict
- SLOPPY dry land within 200 km of the antipode
Can you make an Earth sandwich from Gwangju?
Nearly: a sloppy-grade Earth sandwich. The antipode of Gwangju lies in the South Atlantic Ocean, 103 km from the nearest dry land in Uruguay. Sandwich Law allows a slice within 200 km of the true antipode, and the verifying grid rates Gwangju sloppy, so bread in Gwangju and bread near La Paloma, Uruguay still count as one sandwich. The elevation bonus depends on the spot chosen for the dry slice.
Gwangju is on the Okinawa & Jeju ↔ southern Brazil 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.