China is the country with the longest border in the world. China shares a border with 14 countries and has a cumulative border length of over 22,100 kilometers. The longest border in China is the China-Mongolia border while the smallest is the China-Afghanistan border.
After China, Russia has the longest cumulative border length. Russia like China, also shares a border with 14 countries. Russia has a cumulative border length of approximately 20,000 kilometers.
Top 10 countries with the highest aggregate land border length
| 1 | China | over 22,100 kilometers |
| 2 | Russia | ~20,000 kilometers |
| 3 | Brazil | ~14,700 kilometers |
| 4 | India | ~14,200 kilometers |
| 5 | USA | over 12,000 kilometers |
| 6 | Kazakhstan | ~12,000 kilometers |
| 7 | Democratic Republic of the Congo | ~10,700 kilometers |
| 8 | Argentina | ~9,700 kilometers |
| 9 | Canada | ~8,900 kilometers |
| 10 | Mongolia | ~8,200 kilometers |
Which is the longest international border in the world?
The US-Canada border is the longest international border in the world. It is roughly 8,900 kilometers long.
Question/Answers
1. Which country has the longest border in Africa?
Answer – Democratic Republic of the Congo
2. Which country has the longest border in South America?
Answer – Brazil
3. Which country has the longest border in North America?
Answer – USA