Starting at the Bonifacio Rotunda in the city proper of Davao, Davao–Cotabato Road runs northwest as A. Pichon Street, a one-way street carrying southeast-bound traffic. It then turns southwest to Elpidio Quirino Avenue and becomes McArthur Highway at General Generoso Bridge I over Davao River, all through Davao City proper. It then enters Santa Cruz, Davao del Sur as it traverses its eastern coast. It enters Digos and there it meets Digos–Makar Road, locally known as Rizal Avenue, where N1/AH26 would continue.
This section is part of Maharlika Highway or Asian Highway 26 (AH26), which covers most of National Route 1 (N1).[1]
Digos to Makilala
N75 commences at the intersection with N1/AH26. It traverses to the west through the municipality of Bansalan onto towards Makilala for 32 kilometers (20 mi). There is a gateway sign when entering Makilala.
Makilala to Matalam
At Makilala, it connects towards Makilala–Allah Valley Road (N76) which links Makilala to Sultan Kudarat Province. It traverses Kidapawan, where it is locally known as Quezon Boulevard, and connects to Paco–Roxas–Arakan Valley–Junction Davao–Bukidnon Road (N942). The route then traverses into Matalam for 47 kilometers (29 mi). There is a roundabout that connects Davao–Cotabato Road to a national tertiary highway that leads to M'lang and a shortcut for Makilala–Allah Valley Road (N76).
Matalam to Kabacan
Davao–Cotabato Road traverses towards Kabacan and has a crossing that links up with Sayre Highway (N943). It connects North Cotabato to Bukidnon. The total length of this section is at 11 kilometers (6.8 mi).
Kabacan to Midsayap
At Kabacan, the Davao–Cotabato Road traverses towards Maguindanao del Sur into Datu Montawal and Pagalungan. It then enters Cotabato, traversing Pikit and Aleosan onto towards Midsayap for 42 kilometers (26 mi). At Midsayap, it links to N940 that traverses towards Marbel.
Midsayap to Sultan Kudarat, Maguindanao del Norte
N75 traverses towards into Libungan and links up with Banisilan–Guiling–Alamada–Libungan Road (N944). It finally traverses towards Pigcawayan and Sultan Kudarat into its western section. The western section of Davao–Cotabato Road (N75) links back into the Pan-Philippine Highway in 33 kilometers (21 mi).
History
The highway existed back to the American colonial era as part of Highway 1 in Mindanao that linked Surigao and Davao via Cagayan.[5] The route markers were added in 2014 (for N1/AH26) and 2017 (for N75), although the look of the N75 route marker is different in Davao del Sur due to the stretched 5.