# Cordon–Diffun–Maddela–Aurora Road

Cordon–Diffun–Maddela–Aurora Road or Cordon–Aurora Road signed as National Route 108 (N108) of the Philippine highway network, is a 109.72-kilometer (68.18 mi) national secondary road. It traverses the municipality of Cordon in the province of Isabela, all the municipalities in the province of Quirino (Diffun, Cabarroguis, Saguday, Aglipay, Maddela and Nagtipunan) and the municipality of Dipaculao in the province of Aurora.

## Route description

It serves as the only major road traversing the province of Quirino as well as connecting the province of Isabela to the province of Aurora.
The road starts in the town of Cordon, Isabela at the intersection with the Pan-Philippine Highway. It is locally known as the Cordon–Diffun Road.
It continue southwards into the province of Quirino in which it is locally known as Cordon–Aurora Boundary Road. It traverses through the town of Diffun and Cabarroguis into a junction with Cabarroguis–Santiago Road, it briefly passes through the town of Sagupay and continue to the town of Aglipay into a junction with Echague–Jones–Maddela Road in Maddela, it continues southwards into the town of Nagtipunan and into the province of Aurora.
The road continues to the town of Dinalungan in which it is locally known as Maddela–Dinadiawan Road and ends at the junction with Baler–Casiguran Road.

## Intersections

Intersections are numbered by kilometer posts, with Rizal Park in Manila designated as kilometer zero.
| Province | City/Municipality | Destinations | Notes |
| Isabela | Cordon | N1 (Maharlika Highway) – Manila, Tuguegarao, Cauayan, Ilagan | Northern terminus. Westbound to Manila via Nueva Vizcaya; eastbound towards Cagayan. |
| Quirino | Diffun | Maria Clara–Gabriela Silang Road | |
| Quirino | Diffun | Santiago–Diffun Road — Santiago | Bypasses Cordon town proper. |
| Quirino | Diffun | Liwayway Road | Road to Brgy. Liwayway in Diffun. |
| Quirino | Diffun | Diffun–Dumanisi–Magsaysay–Ifugao Village Road | |
| Quirino | Diffun | San Marcos–Ricarte Sur Road | |
| Quirino | Cabarroguis | San Marcos–Balagbag–Saguday Road — Saguday | |
| Quirino | Cabarroguis | Capitol Hills Road | Loops back to highway. Access to Quirino Provincial Capitol. |
| Quirino | Cabarroguis | Gundaway–Zamora Road / Antonio Luna Street / George Capinpin Street | Cabarroguis town proper. |
| Quirino | Cabarroguis | Benigno Aquino Boulevard (Gundaway–Burgos Road) | |
| Quirino | Cabarroguis | B. Cualo Road | |
| Quirino | Cabarroguis | NRJ Mangandingay–Saguday–Santiago Road — Saguday, Santiago | Alternate road bypassing Cabarroguis, Diffun and Cordon town propers. |
| Quirino | Saguday | Banuar–Dumabel Road | |
| Quirino | Saguday | Dibul–Gamis Road | |
| Quirino | Aglipay | Dalemdem–Pinaripad–Palacian Bypass Road | Northern end of bypass road. |
| Quirino | Aglipay | Pinaripad Sur–Disilwad Road | |
| Quirino | Aglipay | Dalemdem–Pinaripad–Palacian Bypass Road | Southern end of bypass road. |
| Quirino | Aglipay | Palacian–San Francisco Road | |
| Quirino | Aglipay | Victoria–San Francisco Road | |
| Quirino | Aglipay | Victoria–Maddela–Alicia–Kasibu Road | |
| Quirino | Maddela | Echague–Jones–Maddela Road — San Agustin, Jones, Echague | |
| Quirino | Maddela | NRJ–Villa Sur–San Pedro–Cabua-an–Ysmael–Disimungal Road | Northern end of road. |
| Quirino | Maddela | Dumabato–Balligui Road | |
| Quirino | Maddela | Cabaruan Road | Leads to Brgy. Cabaruan in Maddela. |
| Quirino | Nagtipunan | Maddela–Nagtipunan–Nueva Vizcaya Road | Leads inward to Nagtipunan municipality and ends at Dupax del Norte in Nueva Vizcaya. |
| Quirino | Nagtipunan | Sangbay–Anak Road | |
| Quirino | Nagtipunan | NRJ–Villa Sur–San Pedro–Cabua-an–Ysmael–Disimungal Road | Southern end of road. |
| Aurora | Dipaculao – Dinalungan boundary | No major junctions | No major junctions |
| Aurora | Dipaculao | N112 (Baler–Casiguran Road) – Baler, Casiguran, Dilasag | Southern terminus. |
| 1.000 mi = 1.609 km; 1.000 km = 0.621 mi Unopened ||||||