5150 Ha Long Bay
- Date
- March 20, 2027
- Location
- Ha Long Bay, Vietnam
- Race type
- 5150 — 51.5 km (Olympic)
- Swim
- Bay
- Bike course
- Hilly
- Run course
- Flat
- Avg. air temperature
- 69F/21C
- Avg. water temperature
- 70F/21C
- Nearest airport
- Van Don International Airport (VDO)
Official race page on ironman.com
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FAQ
When is 5150 Ha Long Bay?
5150 Ha Long Bay is scheduled for March 20, 2027.
Where is 5150 Ha Long Bay?
5150 Ha Long Bay is held in Ha Long Bay, Vietnam (Asia).
What is the course like at 5150 Ha Long Bay?
5150 Ha Long Bay is a 5150 race (51.5 km (Olympic)) with a bay swim, a hilly bike course and a flat run course.
Is 5150 Ha Long Bay wetsuit legal?
The average water temperature is 70°F (21°C), which is within the age-group wetsuit-legal range (up to and including 76.1°F / 24.5°C) under the 2026 IRONMAN Competition Rules. The official call is made from the water temperature measured on race morning.
What is the nearest airport to 5150 Ha Long Bay?
The nearest airport listed for 5150 Ha Long Bay is Van Don International Airport (VDO).
How do I register for 5150 Ha Long Bay?
Registration is handled on the official IRONMAN race page: https://www.ironman.com/races/5150-ha-long-bay