Route 673
Route information
Maintained by Department of Public Works and Highways
Pili Diversion Road (Camarines Sur)
Length	3.95 km[1] (2.45 mi)
North end	AH 26 (N1) (Maharlika Highway) in Pili
South end	N630 (Governor Jose Fuentebella National Highway) in Pili
Old Calbayog National Route (Samar)
Length	1.99 km[1] (1.24 mi)
North end	AH 26 (N1) (Maharlika Highway) in Calbayog
South end	Barangay Trinidad in Calbayog
Location
Country	Philippines
Provinces	Camarines Sur, Samar
Major cities	Calbayog
Towns	Pili
Highway system
Roads in the Philippines Highways Expressways List
← N672 → N674

National Route 673 (N673) forms a part of the Philippine highway network. It is one of the national secondary roads with two non-contiguous highways, one which runs through the municipality of Pili, Camarines Sur in the Bicol region of Luzon,^[2] while the other road runs within the city of Calbayog in the Samar region of Visayas.^[3]

In Pili, the province's municipality and provincial capital, N673 starts at the intersection of N1 (Maharlika Highway) on its northern terminus and ends at the intersection of N630 (Governor Jose Fuentebella National Highway) as its southern terminus. The entire numbered route is known as Pili Diversion Road, where it bypasses the town proper which Maharlika Highway leads.^[1][2]

In Calbayog, N673 connects from N1 (Maharlika Highway) to Barangay Trinidad. The entire numbered route is known as Old Calbayog National Route, Calbayog Old National Route, or Old National Road, which parallels the runway of Calbayog Airport. After intersecting a narrow street in Barangay Trinidad, the road then continues south unnumbered up to Barangay Basud.^[1][3]