Best Half Marathons in Southeast Asia
Last updated July 31, 2026
The half marathon is the region's default distance, and the range reflects that: everything from major-city races with tens of thousands of entrants to small municipal runs where the 21.1km is the longest thing on offer. Coverage is heaviest in the Philippines and Malaysia, with strong showings in Indonesia and Thailand. Because most events stack 21.1km alongside 10K and 5K legs at the same venue, a half marathon here is usually one option within a larger race day rather than a standalone event.
- 1AUG
- 1AUGMPAJ Ampang Jaya Half Marathon Powered by JomRun®
Ampang Jaya, Selangor, Malaysia
Half Marathon (21.1km) 10K 5KOpen Details → - 2AUG
- 2AUGBintulu Marathon 2026
Bintulu, Sarawak, Malaysia
Full Marathon (42.2km) Half Marathon (21.1km)Closed Details → - 2AUG
- 2AUG
- 2AUG
- 2AUGIJM Allianz Duo Highway Challenge 2026
Subang Jaya, Selangor, Malaysia
Half Marathon (21.1km) 10K 5K - 2AUG
- 2AUGNational MILO Marathon 2026 – Davao Leg
Davao City, Philippines
Full Marathon (42.2km) Half Marathon (21.1km) 10K 5KOpen Details →
Frequently asked questions
Do I need to travel far to find a half marathon in Southeast Asia?
Rarely. The distance appears on race calendars across all the major countries in the region almost every weekend of the season, and most capital cities host several a year. The harder question is usually which one to pick rather than whether one exists near your dates.
What start times should I expect for a Southeast Asian half marathon?
Very early. Flag-offs between 4am and 6am are standard across the region because daytime heat and humidity make later starts unsafe. Factor this into accommodation: staying near the start line matters more here than it would for an equivalent race in a temperate climate.