Santiago–Tuguegarao Road is a major national primary road in the provinces of

Cagayan Cagayan ( ), officially the Province of Cagayan (; ; ; isnag language, Isnag: ''Provinsia nga Cagayan''; ivatan language, Ivatan: ''Provinsiya nu Cagayan''; ; ), is a Provinces of the Philippines, province in the Philippines located in the Cag ...

, Kalinga, and

Isabela Isabela may refer to: People with the given name * Isabela Boscov, Brazilian film critic * Isabela Corona (1913–1993), Mexican actress * Isabela Garcia (born 1967), Brazilian actress * Isabela Moraes (born 1980), Brazilian synchronized swimmer ...

in the

Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...

. It is a bypass road of the

Pan-Philippine Highway The Pan-Philippine Highway, also known as the Maharlika Highway (; ), is a network of roads, expressways, bridges, and ferry services that connect the islands of Luzon, Samar, Leyte, and Mindanao in the Philippines, serving as the country's p ...

, also known as Cagayan Valley Road, connecting to the cities of

Tuguegarao Tuguegarao ( or ), officially the City of Tuguegarao (; ; ; ), is a 2nd class Cities of the Philippines#Legal classification, component city and capital of the Provinces of the Philippines, province of Cagayan, Philippines. According to the 2020 ...

and

Santiago Santiago (, ; ), also known as Santiago de Chile (), is the capital and largest city of Chile and one of the largest cities in the Americas. It is located in the country's central valley and is the center of the Santiago Metropolitan Regi ...

. The road is designated as National Route 51 (N51) of the

Philippine highway network The Philippine highway network is a network of highway, national roads owned and maintained by the Department of Public Works and Highways (DPWH) and organized into three classifications according to their function or purpose: national primar ...

History

Route description

Santiago to Cabatuan

Santiago–Tuguegarao Road starts at Mabini Junction, a roundabout intersection with

Maharlika Highway The Pan-Philippine Highway, also known as the Maharlika Highway (; ), is a network of roads, expressways, bridges, and ferry services that connect the islands of Luzon, Samar, Leyte, and Mindanao in the Philippines, serving as the country's ...

and R.C. Miranda Road in Barangay Mabini, Santiago City. Heading north, it then runs straight to the north where it traverses the municipalities of Ramon, San Mateo, and Cabatuan in Isabela.

Cabatuan to Santa Maria

At the ''

poblacion ''Poblacion'' (from Spanish '' población'', meaning "population"), sometimes abbreviated as Pob., is a term used in the Philippines to refer to the administrative center, downtown, old town, or commercial area of a city or municipality. It ...

'' of Cabatuan, the road turns north at its intersection with Santiago–Tuguegarao Bypass Road, where the Triangle Park is situated. It then crosses the

Magat River The Magat River is a river in the Philippine island of Luzon with a total length of . It originates in the Nueva Vizcaya municipality of Aritao, where the Santa Fe River joins the Marang. It is the largest tributary of the Cagayan River by ...

vis Magat Bridge and traverses the municipalities of

Aurora An aurora ( aurorae or auroras), also commonly known as the northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in Earth's sky, predominantly observed in high-latitude regions (around the Arc ...

, San Manuel, Roxas, Mallig, and

Quezon Quezon, officially the Province of Quezon () and historically known as Tayabas, is a Provinces of the Philippines, province in the Philippines located in the Calabarzon Regions of the Philippines, region on Luzon. Lucena, a highly urbanized ci ...

in Isabela before entering the province of Kalinga. In Kalinga, it traverses the lowland municipalities of

Tabuk Tabuk may refer to: *Tabuk, Kalinga, the capital city of Kalinga province of the Philippines *Tabuk Province, a province of Saudi Arabia **Tabuk, Saudi Arabia, capital city of the province ** Tabuk Regional Airport *Expedition of Tabuk, a military ...

, the province's capital, and

Rizal Rizal most commonly refers to: * Rizal (province), a province of the Philippines * José Rizal, Filipino national hero whom the province is named after Rizal may also refer to: People * Akmal Rizal Ahmad Rakhli, Malaysian footballer * Atep Ri ...

, away from their ''poblacion''s. It then re-enters Isabela and traverses the municipalities of Santo Tomas and Santa Maria.

Santa Maria to Tuguegarao

In Santa Maria, Isabela, the road makes a sharp left turn at its intersection with Cabagan–Santa Maria Road. It then enters the province of

and traverses the municipalities of Enrile and Solana, where it turns east at its intersection with Cagayan–Apayao Road. It crosses the

Cagayan River The Cagayan River, also known as the Río Grande de Cagayán, is the longest river and the largest river by discharge volume of water in the Philippines. It has a total length of approximately and a drainage basin covering . It is located in ...

through the Buntun Bridge and enters the city of

. Approaching the ''poblacion'', it assumes local street names such as Luna Extension and Luna Street, respectively. At its intersection with Rizal Street, west of the

Tuguegarao Cathedral Saint Peter Metropolitan Cathedral, commonly known as Tuguegarao Cathedral, is an 18th-century Baroque architecture, Baroque Roman Catholic church building, church located along Rizal Street, Barangay Centro 10, Tuguegarao City, Philippines. Th ...

, it turns north and assumes such local street name. It then turns northeast towards the Balzain Bridge II and becomes Balzain Highway. The road ends at the Tuguegarao Junction, a roundabout intersection with

( Cagayan Valley Road) and Tuguegarao Diversion Road II.

Intersections

Santiago–Tuguegarao Bypass Road

The Santiago–Tuguegarao Bypass Road is short bypass of Santiago–Tuguegarao Road in

Cabatuan, Isabela Cabatuan, officially the Municipality of Cabatuan (; ), is a municipality in the province of Isabela, Philippines. According to the 2025 census, it has a population of 40,560 people. Being a major rice producing town dubbed as the ''Land o ...

. This bypass road is designated as National Route 53 (N53) of the

. It connects Cabatuan,

Luna Luna commonly refers to: * Earth's Moon, named "Luna" in Latin, Spanish and other languages * Luna (goddess) In Sabine and ancient Roman religion and myth, Luna is the divine embodiment of the Moon (Latin ''Lūna'' ). She is often presented as t ...

and Cauayan.

References

{{DEFAULTSORT:Santiago-Tuguegarao Road Roads in Cagayan Roads in Kalinga (province) Roads in Isabela (province)