Kim Jong Un expected to travel to Vietnam summit by train

North Korean leader Kim Jong Un is expected to travel to Vietnam by train for his second summit with U.S. President Donald Trump, slated for next week, a news report said.

Kim is expected to leave Pyongyang later this week for his planned arrival in Hanoi on Monday, as it could take him at least two and a half days to travel through China, Reuters reported, citing sources with direct knowledge of security and logistics planning.

Trump and Kim are set to hold their second summit from February 27-28, Yonhap reports.

"Kim's train will stop at the Vietnamese border station of Dong Dang, where he will disembark and drive 170 kilometres to Hanoi by car," the report said.

The report also said the "preferred location" for the summit is Vietnam's government guesthouse in central Hanoi while noting that the plans were subject to changes.

Security during the summit was "top priority", Vietnam's government said on its website on Wednesday.

The Metropole Hotel, opposite the Government Guesthouse, will be a backup location for the summit, two of the sources said.

Kim could possibly stay in the Melia hotel during his visit, one of the sources said.

Travel by train has been a favourite mode of transport for Kim Jong Un, and his father, Kim Jong Il, and grandfather, Kim Il Sung.