2026 Garmin Run Marathon Series – Thailand Half Marathon

The 2026 Garmin Run Marathon Series – Thailand Half Marathon is on Sunday 6 December 2026 at the Ayutthaya Tourist Center in Phra Nakhon Si Ayutthaya, over 21.1 km, 10 km and 5 km.

Facts last checked September 29, 2026

The 2026 Garmin Run Marathon Series – Thailand Half Marathon is a road race on Sunday 6 December 2026, starting from the Ayutthaya Tourist Center in Pratu Chai, Phra Nakhon Si Ayutthaya. It is organised by Garmin Thailand and offers 21.1 km, 10 km and 5 km races, with an Elite Runner entry for 21.1 km and 10 km. The half marathon starts at 4.30am, the 10 km at 5.00am and the 5 km at 5.15am.

Key facts
Date	2026-12-06
Distance Km	21.1, 10, 5
Primary Distance Km	21.1
Venue	Ayutthaya Tourist Center, Pratu Chai
Organizer	Garmin Thailand
Price Range	THB 599-1,200
City	Phra Nakhon Si Ayutthaya
Country	Thailand

half-marathon thailand

Frequently asked questions

What time does the Garmin Thailand Half Marathon start?

The 21.1 km starts at 4.30am, and its start block is open from 4.15am to 4.40am. The 10 km starts at 5.00am and the 5 km at 5.15am. The 21.1 km and 10 km races are chip-timed and have cut-off points.

How much is entry and where is race kit collection?

Checkrace lists the 21.1 km at THB 1,099, the 10 km at THB 999 and the 5 km at THB 599; Elite Runner entries cost THB 1,200 and need a certified qualifying result. Race kits are collected on Saturday 5 December 2026 from 10am to 7pm at the Ayutthaya Tourist Center. Postal delivery is also available.