Longest Coastlines
Longest Coastlines: the dated top ten, the source and what this coastline kilometres using one source and measurement convention comparison tells us.
In this 2026-10-14 snapshot source snapshot, Canada has the highest reported value among eligible entries: 202,080.00. Norway follows at 83,281.00. The unit is coastline kilometres using one source and measurement convention.
About the data
Snapshot retrieved 14 October 2026. 193 eligible observations. Country entries only; separately listed dependencies excluded. Missing observations are excluded, not treated as zero. Rankings use unrounded values; displayed values are rounded to two decimals.
| Country | Value |
|---|---|
| Canada | 202,080 |
| Norway | 83,281 |
| Indonesia | 54,716 |
| Russia | 37,653 |
| Philippines | 36,289 |
| Japan | 29,751 |
| Australia | 25,760 |
| United States | 19,924 |
| New Zealand | 15,134 |
| China | 14,500 |
What the numbers mean
Coastline length changes with the scale used to measure it. A more detailed line follows more bays and inlets, often producing a longer result. Mixing the CIA and WRI columns would therefore make an inconsistent ranking. We use the CIA column throughout and exclude dependencies listed separately from sovereign countries.
Where the top ten ends
The tenth entry is China at 14,500.00. This is a cutoff within the published comparison, not evidence that countries outside the table have no activity. The date and coverage are part of the answer: updating the source or changing the eligible territories can change who appears.
Source and method
Snapshot retrieved 14 October 2026. 193 eligible observations. Country entries only; separately listed dependencies excluded. Missing observations are excluded, not treated as zero. Rankings use unrounded values; displayed values are rounded to two decimals.