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In Thailand, cities are at a moderate distance from each other, with an average distance of 181 km between the 10 most populated cities. The following matrix shows all distances between the main cities.
| Bangkok | Samut Prakan | Phra Pradaeng | Hat Yai | Pak Kret | Lampang | Yala | Surat Thani | |
|---|---|---|---|---|---|---|---|---|
| Bangkok | - | 20 km 13 mi | 11 km 7 mi | 746 km 464 mi | 17 km 11 mi | 514 km 319 mi | 803 km 499 mi | 526 km 327 mi |
| Samut Prakan | 20 km 13 mi | - | 10 km 6 mi | 729 km 453 mi | 36 km 23 mi | 533 km 331 mi | 784 km 487 mi | 512 km 318 mi |
| Phra Pradaeng | 11 km 7 mi | 10 km 6 mi | - | 736 km 457 mi | 28 km 18 mi | 525 km 326 mi | 792 km 492 mi | 517 km 321 mi |
| Hat Yai | 746 km 464 mi | 729 km 453 mi | 736 km 457 mi | - | 764 km 474 mi | 1,253 km 779 mi | 103 km 64 mi | 267 km 166 mi |
| Pak Kret | 17 km 11 mi | 36 km 23 mi | 28 km 18 mi | 764 km 474 mi | - | 497 km 309 mi | 820 km 509 mi | 543 km 337 mi |
| Lampang | 514 km 319 mi | 533 km 331 mi | 525 km 326 mi | 1,253 km 779 mi | 497 km 309 mi | - | 1,315 km 817 mi | 1,013 km 629 mi |
| Yala | 803 km 499 mi | 784 km 487 mi | 792 km 492 mi | 103 km 64 mi | 820 km 509 mi | 1,315 km 817 mi | - | 359 km 223 mi |
| Surat Thani | 526 km 327 mi | 512 km 318 mi | 517 km 321 mi | 267 km 166 mi | 543 km 337 mi | 1,013 km 629 mi | 359 km 223 mi | - |
Among the 10 main cities, the longest distance is 1,315 km, between Yala and Lampang. If the group is expanded to the 25 largest cities, the longest distance is between Yala and Chiang Rai, with 1,487 km. In the group of the 100 main cities, the longest distance is between Fang and Yala, with 1,497 km.
| Group | From → To | Distance |
|---|---|---|
| Among the main 10 cities | From Yala to Lampang | 1,315 km (817 mi) |
| Among the main 25 cities | From Yala to Chiang Rai | 1,487 km (924 mi) |
| Among the main 100 cities | From Fang to Yala | 1,497 km (930 mi) |
The greatest latitudinal distance (north to south) is also from Fang to Yala, with a displacement of 13.38 degrees of latitude in geographic coordinates, which is approximately equivalent to 1,479 km.
In the longitudinal direction (west to east), the greatest distance is from Ubon Ratchathani to Phuket, with a displacement of 7.35 degrees of longitude, which is approximately equivalent to 693 km. The total distance between these cities is 1,075 km.
International routes from cities in Thailand reach significant distances, such as the 16,877 kilometers between Bangkok and Buenos Aires, covering a transcontinental connection between Asia and South America. Below are some international distances from Thailand.
| Bangkok → London | 9,543 km |
| Bangkok → Los Angeles | 13,320 km |
| Bangkok → Sydney | 7,524 km |
| Bangkok → Paris | 9,454 km |
| Bangkok → Tokyo | 4,604 km |
| Bangkok → Buenos Aires | 16,877 km |
| Samut Prakan → London | 9,563 km |
| Samut Prakan → Los Angeles | 13,328 km |
| Samut Prakan → Sydney | 7,504 km |
| Samut Prakan → Paris | 9,474 km |
| Samut Prakan → Tokyo | 4,607 km |
| Samut Prakan → Buenos Aires | 16,870 km |
| Phra Pradaeng → London | 9,553 km |
| Phra Pradaeng → Los Angeles | 13,326 km |
| Phra Pradaeng → Sydney | 7,514 km |
| Phra Pradaeng → Paris | 9,465 km |
| Phra Pradaeng → Tokyo | 4,608 km |
| Phra Pradaeng → Buenos Aires | 16,871 km |
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