Race day
20
Dec 2026
AIMS-listed half marathon road race in Thailand.
Provenance ledger
Every fact, and where it came from
| Field | Value | Source | Updated |
|---|---|---|---|
| Date | Sunday 20 December 2026 to Monday 21 December 2026AIMS calendar · 4 Jun 2026 | AIMS calendar | 4 Jun 2026 |
| Start time | Not confirmedCheck the official source | Check the official source | - |
| Distances | Half MarathonAIMS calendar · 4 Jun 2026 | AIMS calendar | 4 Jun 2026 |
| Location | ThailandAIMS calendar · 4 Jun 2026 | AIMS calendar | 4 Jun 2026 |
| Start area | Bangkok, ThailandConfirm the exact start with the organizerAIMS calendar · 4 Jun 2026 | AIMS calendar | 4 Jun 2026 |
| Entry price | Not confirmedCheck the official source | Check the official source | - |
| Course | Road · AIMS / World Athletics certifiedAIMS calendar · 4 Jun 2026 | AIMS calendar | 4 Jun 2026 |
| Official website | Bangsaen21.comOrganizer · 4 Jun 2026 | Organizer | 4 Jun 2026 |
| Listing | Verified listingSunday Marathon review · 4 Jun 2026 | Sunday Marathon review | 4 Jun 2026 |
Source is where this listing’s facts came from. Where a field could not be confirmed we leave it blank rather than guess.
Report a correctionAbout this race
AIMS-listed half marathon road race scheduled for December 20, 2026 in Thailand.
Is this race a fit?
These notes are generated from listed Sunday Marathon race facts. They are meant for shortlisting and planning, not as a replacement for official organizer instructions.
Best For
Runners comparing road race options
Bangsaen21 belongs on the shortlist when you are comparing Half Marathon options around Thailand and want the key date, location, registration, and course facts in one place.
Watch For
Find the current registration source
No direct registration link is listed here yet; use the official/source link or send a correction if you find the current entry page.
Decision Signal
Performance claims need source checks
Bangsaen21 should be evaluated as a full race-weekend choice in Thailand, not only as a date on a calendar. Start with road surface, certified course.
- Date And Schedule
Bangsaen21 is currently listed for December 20, 2026, which makes the December planning window important for training and travel. Recheck official timing before race week.
- Location Base
Plan around Thailand, then verify the exact start area, finish area, packet pickup, and post-race exit route before booking non-refundable travel.
- Course Fit
Listed course signals include road surface, certified course. Use them to compare effort, pacing risk, and training fit before relying on the race for a specific goal.
- Entry Readiness
No direct registration link is listed here yet; use the official/source link or send a correction if you find the current entry page.
What runners said
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