Races/Thailand
Training plan for the Chiang Mai Marathon
Sunday, 20 December 2026 in Chiang Mai, Thailand. That is 10 weeks away.
When a build would have to start
ALLUNGO plans a block of a length that suits the distance, then works backwards from race day. For this one:
Half — a 14-week build, 4 runs a week
Not enough room left for the full build.
Marathon — a 18-week build, 5 runs a week
Not enough room left for the full build.
Too close? The next one
The organiser runs this the third Sunday in December, which puts the 2027 race on Sunday, 19 December 2027. That date is not announced yet, so check it before planning to it — but a Marathon build for it would start the week of 9 August 2027.
On the day
Distances: Half, Marathon. Entries, course and timings are chiangmaimarathon.com’s. They decide when entries open and close, and whether the race runs at all — ALLUNGO sells nothing here and takes nothing from them.
The date here is the one the organiser published, rechecked every 1 hour against the list. Confirm it on their site before you enter.