Drag the slider to estimate the distance between two cities. 10 pairs, 20 seconds each.
FAQ
Use reference distances you know (e.g., New York to LA is about 4,000km) and compare. Consider whether the cities are on the same continent, latitude, and factor in Earth's curvature.
Distances are measured in kilometers as the crow flies (great-circle distance), not driving distance. This represents the shortest distance between two points on Earth's surface.
It builds spatial understanding of the world, helps with travel planning, and improves general geographic literacy. It also demonstrates common misconceptions about map projections.
About this test
The distance estimator game tests your intuitive understanding of distances between cities around the world. How well calibrated is your mental map?
How It Works
Two cities are named. Estimate the distance between them in kilometers. Points are awarded based on how close your estimate is to the actual distance.
Map Projection Distortion
Most maps distort distances due to projecting a sphere onto a flat surface. The Mercator projection makes high-latitude distances look much larger than they are, which often leads to estimation errors.
Tips
- Use known reference distances as calibration points
- Remember that the Equator is about 40,000km around
- Factor in that east-west distances shrink at higher latitudes