Penang police chief Khaw Kok Chin said the 42km run on Sunday would pass through Persiaran Bayan Indah, Tun Dr Lim Chong Eu Expressway, the Penang Bridge and Perai.

“The road closures and diversions will be carried out in stages from 11pm on Saturday until 10am the following day. The public is advised to obey the instructions of the traffic police and plan their journey,” he said in a statement today.

For the Timur Laut district, the roads that will be closed are the Tun Dr Lim Chong Eu Expressway, from the Sungai Pinang junction to Bayan Indah Road and from George Town to Bayan Lepas and the Penang Bridge.

For the Barat Daya district, the road closures would involve the Queensbay area and the Tun Dr Lim Chong Eu Expressway heading to George Town.

All vehicles heading to the Penang International Airport and Batu Maung will be diverted to Jalan Sultan Azlan Shah.

Khaw said that in the Seberang Perai Tengah district, vehicles heading to the island from the North-South Expressway would be diverted to the Sultan Abdul Halim Mu’adzam Shah Bridge.

He advised motorists to plan their journey and use alternative roads.

“Those who want to watch or participate in PBIM are advised to park their vehicles in the area provided by the organiser or to use the public transport system to avoid congestion,” he said.

More than 20,000 people have registered for the race, which is divided into three categories – the full marathon (42km), the half marathon (21km) and Open/Junior (10km).