21 days

Hanoi → Pu Luong → Xam Neua → Phonsavan → Viengthong → Na Hin → Nakai → Villabury → Ta Oi → Attapeu → Khong Island → Preah Vihear → Siem Reap → Kampong Cham → Stung Treng → Pleiku → Quy Nhon → Hoi An → Da Nang

Hanoi → Pu Luong → Sam Neua → Phonsavan → Nahin → Kong Lor → Savannakhet → Muang Khong → Kong Island → Krong Stung Treng → Siem Reap → Phnom Penh → Krong Kracheh → Mondulkiri → Da Lat → Buon Ma Thuot → Kon Tum → Hoi An → Da Nang