Watlaharnrai Half Marathon (5th ed.)

The Watlaharnrai Half Marathon is a 21.1km race held at Wat La Harn Rai in Ban Khai, Rayong, Thailand on September 6, 2026.

Facts last checked August 25, 2026

This edition has already taken place. Looking ahead? See the Watlaharnrai Half Marathon 2027.

The Watlaharnrai Half Marathon is a 21.1km road race set to take place on September 6, 2026, at Wat La Harn Rai in Ban Khai, Rayong, Thailand. This will be the event's 5th edition.

Key facts
Date	2026-09-06
Distance Km	21.4, 10, 5
Primary Distance Km	21.4
Venue	Wat La Harn Rai, Ban Khai, Rayong
City	Ban Khai, Rayong
Country	Thailand

Pros

Established event now in its 5th edition
Single clear distance option (21.1km) makes planning straightforward
Set at a distinctive temple venue in Rayong, Thailand

half-marathon thailand

Frequently asked questions

When is the Watlaharnrai Half Marathon taking place?

The Watlaharnrai Half Marathon is scheduled for September 6, 2026. This edition marks the 5th running of the event, which takes place at Wat La Harn Rai in Ban Khai, Rayong, Thailand. No further scheduling details beyond the date have been provided at this time.

What distance can I run at this race?

The Watlaharnrai Half Marathon offers a single distance of 21.1 kilometers, the standard half marathon distance. This is listed as the primary and only distance option for the event, so participants should plan and train accordingly for a half marathon course.

Where is the Watlaharnrai Half Marathon held?

The race takes place at Wat La Harn Rai, located in Ban Khai, Rayong, Thailand. This temple venue serves as the host site for the event, which is in Ban Khai, Rayong, and is now reaching its 5th edition in 2026.