The three main access roads leading to Baguio from the lowlands are Kennon Road, Aspiras-Palispis Highway (formerly Marcos Highway)[3], and Naguilian Road also known as Quirino Highway. Kennon Road starts from Rosario, La Union and winds through a narrow, steep valley. This is the fastest route to Baguio but is perilous, with landslides during the rainy season. This route to Baguio is as scenic as it is dangerous. Aspiras Highway, which starts from Agoo, La Union and connects to Palispis Highway at the boundary of Benguet and La Union, and Naguilian Road, which starts from Bauang, La Union, are longer routes but are safer than Kennon Road and are the preferred routes for coaches, buses and lorries.
It takes an average of six hours to travel the 250 km distance between Manila and Baguio by way of Kennon Road. It is about fifteen minutes longer through the Aspiras-Palispis Highway and could take three more hours when going through Naguilian Road, which is the usual route for travellers from the North.
[glow=yellow]There is another access to Baguio from Aritao in the province of Nueva Vizcaya passing through Itogon, Benguet but this is less traveled, the road is not well maintained, and public transportation through this route is not as regular. Another road, Halsema Highway (also known as "Mountain Trail") leads north through the mountainous portion of the Cordillera Autonomous Region. It starts at the northern border of Baguio, in the Municipality of La Trinidad (Trinidad Valley).[/glow]