How big is a 20 km radius?
A 20 km radius covers a circular area of about 1,257 sq km (around 485 sq mi) — roughly the same land area as Los Angeles. Measured edge to edge through the center, the full circle spans 40 km across.
Walking from the center out to the edge covers 20 km, which takes about 4 hr 8 min at a typical walking pace. Driving that same straight-line distance takes about 25 minutes — real travel time varies a lot depending on roads, terrain, and traffic.
What a 20 km radius is used for
- Typical restaurant-chain or courier delivery coverage
- A rideshare or taxi service area around a city
- A weather warning radius, like for a tornado or flash flood
- Local radio or broadcast signal coverage
Draw a 20 km radius on the map →
FAQ
What is the area of a 20 km radius?
A 20 km radius covers a circular area of about 1,257 sq km (roughly 485 sq mi) — about the same land area as Los Angeles.
How long would it take to walk or drive 20 km?
Walking from the center to the edge (20 km) takes about 4 hr 8 min at an average walking pace. Driving the same straight-line distance would take about 25 minutes, though actual travel time depends heavily on roads, terrain, and traffic.