# Phahonyothin Road

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Phahonyothin_Road
> Markdown URL: https://mediated.wiki/source/Phahonyothin_Road.md
> Source: https://en.wikipedia.org/wiki/Phahonyothin_Road
> Source revision: 1325079047
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

Road in Thailand

"Phahonyothin" redirects here. For the Thai general and politician, see [Phot Phahonyothin](/source/Phot_Phahonyothin).

National Highway 1 ทางหลวงแผ่นดินหมายเลข 1 ถนนพหลโยธิน Thanon Phahon Yothin Route information Part of AH1 / AH2 / AH12 Length 1,005 km (624 mi) Existed 1910–present Major junctions South end Bangkok, Victory Monument North end Mae Sai district, Chiang Rai, border to Myanmar Location Country Thailand Provinces Pathum Thani, Ayutthaya, Saraburi, Lopburi, Nakhon Sawan, Chainat, Kamphaeng Phet, Tak, Lampang, Phayao Highway system Highways in Thailand Motorways Asian Highways

**Phahonyothin Road** ([Thai](/source/Thai_language): ถนนพหลโยธิน, [RTGS](/source/Royal_Thai_General_System_of_Transcription): **Thanon Phahon Yothin**, pronounced [\[tʰā.nǒn pʰā.hǒn jōː.tʰīn\]](https://en.wikipedia.org/wiki/Help:IPA/Thai)) or **Highway 1** is a main road in [Bangkok](/source/Bangkok) and one of the four primary highways in [Thailand](/source/Thailand), which include [Mittraphap Road](/source/Mittraphap_Road) (Highway 2), [Sukhumvit Road](/source/Sukhumvit_Road) (Highway 3), and [Phet Kasem Road](/source/Phet_Kasem_Road) (Highway 4). It begins at [Victory Monument](/source/Victory_Monument_(Bangkok)) in [Bangkok](/source/Bangkok) and runs [north](/source/Northern_Thailand) to the [Burmese](/source/Burma) border, with a total length of 1,005 km (624 mi).

## History

Phahonyothin Road passing [Chatuchak Park](/source/Chatuchak_Park)  view towards [Lat Phrao Square](/source/Lat_Phrao_Square)

Mae Sai Pass

Following the [Boworadet Rebellion](/source/Boworadet_Rebellion) in October 1933, the government of [Phraya Phahonphonphayuhasena](/source/Phraya_Phahonphonphayuhasena) proposed the construction of a highway linking central [Bangkok](/source/Bangkok) with [Don Mueang Airfield](/source/Don_Mueang_Airfield) to strengthen its control over the facility. Construction began in March 1934 and was completed in July of the same year. The road was originally named "Prachathipat Road" ([Thai](/source/Thai_language): ถนนประชาธิปัตย์, *Thanon Prachathipat*),[1] spanning a distance of 22 km (14 mi).

In 1938, Prime Minister [Plaek Phibunsongkhram](/source/Plaek_Phibunsongkhram) ordered the extension of the road from [Don Mueang](/source/Don_Mueang) through [Bang Pa-in](/source/Bang_Pa-in), [Ayutthaya](/source/Phra_Nakhon_Si_Ayutthaya_(city)), [Saraburi](/source/Saraburi), [Lopburi](/source/Lopburi), and [Sing Buri](/source/Sing_Buri), bringing its total length to 162 km (101 mi). The extended road was renamed **Phahonyothin Road** in honor of Phraya Phahonphonphayuhasena (personal name Phot Phahonyothin), the second [prime minister of Thailand](/source/Prime_minister_of_Thailand) and one of the leaders of the [1932 Siamese revolution](/source/1932_Siamese_revolution).[2]

## Route

In [Bangkok](/source/Bangkok), Phahonyothin Road originates at the northeast corner of [Victory Monument](/source/Victory_Monument_(Thailand)) on the periphery of [Ratchathewi](/source/Ratchathewi) and [Phaya Thai](/source/Phaya_Thai_District) districts, then crosses [Chatuchak](/source/Chatuchak_(district)), [Bang Khen](/source/Bang_Khen), [Don Mueang](/source/Don_Mueang), and [Sai Mai](/source/Sai_Mai) districts before continuing into [Pathum Thani Province](/source/Pathum_Thani_Province), and on through [Ayutthaya](/source/Ayutthaya_Province), [Saraburi](/source/Saraburi_Province), [Lopburi](/source/Lopburi_Province), [Nakhon Sawan](/source/Nakhon_Sawan_Province), [Chainat](/source/Chainat_Province), again through Nakhon Sawan, [Kamphaeng Phet](/source/Kamphaeng_Phet_Province), [Tak](/source/Tak_Province), [Lampang](/source/Lampang_Province), [Phayao](/source/Phayao_Province) and finally [Chiang Rai](/source/Chiang_Rai_Province), ending in [Mae Sai](/source/Amphoe_Mae_Sai) district, where it connects to [Tachileik](/source/Tachileik) in [Myanmar](/source/Myanmar).

Phaholyothin Road in Bangkok is also a demarcation line between districts or sub-districts in several phases as follows:

1. [Thung Phaya Thai](/source/Thung_Phaya_Thai) (outbound) and Thanon Phaya Thai (inbound) in Ratchathewi district, as a continuation of [Phaya Thai Road](/source/Phaya_Thai_Road), from Victory Monument to the bridge over the [Khlong Samsen](/source/Khlong_Sam_Sen).

1. Phaya Thai (outbound) and Samsen Nai (inbound) in Phaya Thai district throughout the entire area, from the bridge over the Khlong Samsen to the bridge over the Khlong Bang Sue (begins July 26, 2017).[3]

1. [Chatuchak](/source/Chatuchak_subdistrict) (outbound) and [Chom Phon](/source/Chom_Phon_subdistrict) (inbound) in Chatuchak district from the bridge over the Khlong Bang Sue to Ratchayothin Intersection.

1. [Lat Yao](/source/Lat_Yao_subdistrict%2C_Bangkok) (outbound) and [Chan Kasem](/source/Chan_Kasem) (inbound) in Chatuchak district from Ratchayothin to Sena Nikhom Intersections.

1. Lat Yao (outbound) and [Sena Nikhom](/source/Sena_Nikhom) (inbound) in Chatuchak district from Sena Nikhom Junction to Thong Chanya Bridge.

1. Bang Khen district (outbound) and Sai Mai district (inbound) from the bridge over the Khlong Lam Phak Chi to [Saphan Mai](/source/Saphan_Mai) quarter.

1. Don Mueang district (outbound) and Sai Mai district (inbound) from Saphan Mai quarter to the administrative boundary line between Bangkok and Pathum Thani.

## See also

- [Thai highway network](/source/Thai_highway_network)

- [Kunming-Bangkok Expressway](/source/Kunming-Bangkok_Expressway)

- [Bangkok/Phahonyothin](https://en.wikivoyage.org/wiki/Bangkok/Phahonyothin#Q2063769) travel guide from Wikivoyage

## Further reading

- Thomas fuller, ["In Isolated Hills of Asia, New Roads to Speed Trade"](https://www.nytimes.com/2008/03/31/world/asia/31laos.html?_r=1&oref=slogin), *New York Times*, March 31, 2008

## References

1. **[^](#cite_ref-Sarunyou_1-0)** Thepsongkraow, Sarunyou (15 October 2024). ["อนุสาวรีย์ปราบกบฏ: จากจุดเริ่มต้นสู่การอันตรธาน พ.ศ. 2476–2561"](https://pridi.or.th/th/content/2024/10/2179) [Rebellion Suppression Monument: From Beginning to Disappearance, 1933–2018]. *Pridi Banomyong Institute* (in Thai). Retrieved 3 June 2025. Originally published at ["อนุสาวรีย์ปราบกบฏ : จากจุดเริ่มต้นสู่การอันตรธาน พ.ศ. 2476–2561"](https://revolutionaryobjects.org/th/node/58). *revolutionaryobjects.org*.

1. **[^](#cite_ref-2)** อรณี แน่นหนา (2002). *นามนี้มีที่มา*. กรุงเทพฯ: ประพันธ์สาส์น. (in Thai) (Brief histories of 129 place names in Bangkok.)

1. **[^](#cite_ref-3)** ["ประกาศกรุงเทพมหานคร เรื่อง เปลี่ยนแปลงพื้นที่แขวงสามเสนใน และตั้งแขวงพญาไท เขตพญาไท"](https://web.archive.org/web/20190214213658/http://www.ratchakitcha.soc.go.th/DATA/PDF/2560/E/215/36.PDF) [Bangkok announcement subject: Changing the area of Samsen Nai Subdistrict and established Phaya Thai Subdistrict, Phaya Thai District] (PDF). *Royal Thai Government Gazette* (in Thai). Archived from [the original](http://www.ratchakitcha.soc.go.th/DATA/PDF/2560/E/215/36.PDF) (PDF) on February 14, 2019.

Wikimedia Commons has media related to [Phahonyothin Road](https://commons.wikimedia.org/wiki/Category:Thailand_Route_1).

[13°50′51″N 100°34′48″E / 13.8474°N 100.5800°E / 13.8474; 100.5800](https://geohack.toolforge.org/geohack.php?pagename=Phahonyothin_Road&params=13.8474_N_100.58_E_)

v t e Road infrastructure in Thailand Controlled-access highways Expressway Chaloem Maha Nakhon Si Rat Chalong Rat Burapha Withi Udon Ratthaya Prachim Ratthaya S1 Kanchanaphisek Motorway 5 6 7 8 9 51 52 53 54 61 62 63 64 65 71 72 81 82 83 84 85 91 Elevated tollway Uttaraphimuk Highways Northern 1 11 12 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 125 126 127 128 129 130 131 Northeastern 2 21 22 23 24 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 238 239 240 241 242 243 244 247 288 290 291 292 293 294 295 299 Central 3 31 32 33 34 35 36 37 38 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 323 324 325 326 327 329 330 331 332 333 334 335 336 338 339 340 341 343 344 344 346 347 348 349 350 351 352 354 356 357 359 360 361 362 363 364 365 366 367 368 369 370 372 375 376 377 Southern 4 41 42 43 44 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 425 Italics indicate routes under construction. Crossed out names indicate former highways.

---
Adapted from the Wikipedia article [Phahonyothin Road](https://en.wikipedia.org/wiki/Phahonyothin_Road) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Phahonyothin_Road?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.