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Run SEA

Best Half Marathons in Southeast Asia

Races in Hanoi, Buriram, Bangkok and 6 other cities. This list is rebuilt from the directory on every publish, so it shows what is open to enter now rather than a snapshot of an earlier calendar.

10 races Nov 2026 – Jan 2027 10 with in-depth reviews

Ordered by how strongly each entry is reviewed and sourced

  1. 8NOV
    1. Standard Chartered Hanoi Marathon Heritage Race

    Hanoi, Vietnam

    Full marathon distance (42.195km) available for serious runners

    Full Marathon (42.2km) Half Marathon (21.1km) 10K 5K
    VND 278000
    Read the full review →
  2. 23JAN
    2. Buriram Marathon Presented by Chang Mineral

    Buriram, Thailand

    Offers a choice of two distances: full marathon (42.195 km) and half marathon (21.1 km)

    Full Marathon (42.2km) Half Marathon (21.1km)
    Read the full review →
  3. 10JAN
    3. 37th Bangkok Marathon

    Bangkok, Thailand

    Iconic, historic venue beside the Grand Palace in Bangkok

    Full Marathon (42.2km) Half Marathon (21.1km) 10K
    Read the full review →
  4. 13DEC
    4. Penang Bridge International Marathon

    George Town, Malaysia

    Unique route on Penang Bridge, a notable landmark setting

    Full Marathon (42.2km) Half Marathon (21.1km) 10K
    Read the full review →
  5. 6DEC
    5. BYD Singapore International Marathon by Adidas

    Singapore, Singapore

    Offers a full range of distances from 5K to full marathon

    Full Marathon (42.2km) Half Marathon (21.1km) 10K 5K
    Read the full review →
  6. 10JAN
    6. Khon Kaen International Marathon (22nd ed.)

    Khon Kaen, Thailand

    Long-standing race history, now in its 22nd edition

    Full Marathon (42.2km) Half Marathon (21.1km) 5K (5.4km)
    400-2,500 THB
    Read the full review →
  7. 6DEC
    7. National MILO Marathon 2026 – National Finals

    Clark City, Pampanga, Philippines

    Organized by RUNRIO Inc., an established marathon organizer

    Full Marathon (42.2km) Half Marathon (21.1km)
    Read the full review →
  8. 31JAN
    8. Chombueng Marathon (40th ed.)

    Chom Bueng, Ratchaburi, Thailand

    Long-running event now in its 40th edition, suggesting an established history

    Full Marathon (42.2km) Half Marathon (21.1km)
    Read the full review →
  9. 28NOV
    9. Amazing Thailand Marathon Bangkok (ATMB)

    Bangkok, Thailand

    Backed by major organizers including the Royal Thai Government, Bangkok Metropolitan Administration, and World Athletics

    Full Marathon (42.2km) Half Marathon (21.1km) 10K 5K (4.5km)
    USD 23
    Read the full review →
  10. 15NOV
    10. Bank Jateng Borobudur Marathon

    Magelang, Indonesia

    Routes through Borobudur Temple Park, a UNESCO World Heritage Site -- a genuinely distinctive course landmark

    Full Marathon (42.2km) Half Marathon (21.1km) 10K
    IDR 650,000 (10K) / 850,000 (Half) / 950,000 (Full)
    Read the full review →