Federal Route 503 (also known as Berungis–Kota Belud Highway) is a federal highway in Sabah, Malaysia that connects the Berungis roundabout all the way to Kota Belud town. Part of the Pan-Borneo Highway, it is frequently used by driver from Kota Kinabalu to Kudat.
Route background Federal Route 503 starts from the Berungis Roundabout where it intersect with Federal Route 22, as well as part of a route concurrency with Sabah Federal Route 1. The road is flat to gently undulating road with speed limit between 60 and 80km/h to Tenghilan. The road which runs between Tenghilan and Kampung Kelawat crosses the foothill of Crocker Range, which only summit at on Kelawat Forest Reserve. It is a hilly road with dedicates climbing lane configured as dual carriageway (2+2 road), with gradients mostly ranging between 10% and 12%, most light vehicle are still fast enough though a heavy-duty vehicle like a lorry will stay on the left lane. Within this hilly section, most declines are only up to 50km/h speed limit.
Because of its gradient with the addition of climbing road lane as 2+2 road, it is considered as one of the steepest road in the Malaysian state of Sabah. Additionally, it also provides a view of the Mount Kinabalu along the Crocker Mountains. Considered as a hill pass that only elevated on , the hill pass was often called Kelawat Hill () by most people in Kota Belud.
History The FT503 Jalan Bulatan Berungis–Bulatan Mengkabong upgrade project amounted RM150.7 millions is finalised in specify surface designation final stage in December 2024 by Ministry of Works.
Junction lists The entire route is located in West Coast Division, Sabah.
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