Ho Chi Minh City: An Established, Multi-Distance Flagship
The Techcombank Ho Chi Minh City International Marathon, now in its 9th edition, is the country's most established southern flagship, offering six distance options from 1.5km up to the full marathon -- a genuinely wide spread that makes it accessible to a training group with very different ability levels on the same race day. That edition count is a real signal of staying power in a region where many new races don't make it past their first few years.
The HCMC Marathon, a separate event starting at 30/4 Park on the city's central Le Duan Street, offers an equally accessible, centrally-located alternative if the Techcombank event's date doesn't line up with a planned trip.
Hanoi: Racing Past Hoan Kiem Lake and the Old Quarter
The VPBank Hanoi International Marathon runs a scenic city-center course starting at the iconic Hoan Kiem Lake, one of Hanoi's most recognizable landmarks, while the Standard Chartered Hanoi Marathon Heritage Race routes specifically through the city's historic Old Quarter -- two genuinely different ways to experience Hanoi's old-city character on foot rather than just city-loop mileage.
The Techcombank Hanoi International Marathon adds a third strong option, with six distance choices similar to its Ho Chi Minh City counterpart, useful if a runner wants Hanoi's atmosphere without the Old Quarter's narrower streets.
Ha Long Bay: Vietnam's Most Distinctive Course
The Halong Bay Heritage Marathon, held in Ha Long, Quang Ninh, is the clearest standout pick in the country for scenery alone -- a full and half marathon run against the backdrop of Ha Long Bay's UNESCO World Heritage-listed limestone karst islands, a setting genuinely unlike anything else on Vietnam's race calendar.
This is a strong pick specifically for a runner planning to combine racing with sightseeing -- Ha Long Bay is already one of Vietnam's most popular tourist destinations independent of the race, making the trip easy to justify even for a travel companion who isn't running.
Da Nang: A Coastal Alternative in Central Vietnam
The Danang International Marathon gives central Vietnam its own coastal race option, distinct from the Hanoi-versus-Ho-Chi-Minh-City focus of most of the country's calendar. Da Nang's beaches and its position between Hue and Hoi An make it a strong anchor for a central-Vietnam race trip that doesn't require choosing between the north and south.
It's worth checking this race's specific distance options before committing, since the exact spread varies slightly from the two bigger northern and southern flagship events.