Hanoi Half Marathon
Hanoi, Vietnam · Sunday 9 November 2025
The Hanoi Half Marathon is one of the premier races in Vietnam, showcasing the vibrant and bustling streets of the country’s capital. The race takes participants through the historic districts, with runners experiencing the lively, colorful streets of Hanoi, complete with centuries-old architecture, vibrant markets, and charming alleys. The course also offers scenic views of Hoan Kiem Lake and West Lake, adding a tranquil element to the lively city atmosphere. The humidity and warm temperatures
Difficulty Calculator
h
:m
:s
Adjusted Time
1:47:56
Time difference: +2.9 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain27m
Elevation High38m
Elevation Low29m
Weather Forecast
High26°C
Low24°C
Chance of Rain93%
Hanoi Half Marathon 2025 Course Analysis
Hanoi Half Marathon is a half marathon held in Hanoi, Vietnam, scheduled for Sunday 9 November 2025. The course is run on road surface with 27m of total elevation gain, reaching a maximum altitude of 38m above sea level. For registration and full race details, visit the official Hanoi Half Marathon website.
Elevation Profile
This is a very flat course with only 27m of total elevation gain across the full distance. The course ranges from 29m to 38m above sea level — a 9m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Expected Race Day Weather
Based on historical weather data for November, the expected race day conditions are as follows. Hot conditions are expected, with temperatures between 24°C and 26°C. Heat is one of the biggest performance factors in marathon running — research shows that for every degree above 15°C, marathon times slow by approximately 1-2%. Extra hydration and a conservative start are strongly recommended. There is a high chance of rain (93%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.
Surface Type: Road
Hanoi Half Marathon is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.
How Difficult Is Hanoi Half Marathon?
Our difficulty rating for Hanoi Half Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based half marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare Hanoi Half Marathon against other half marathons to find the right race for your goals.