Race review
Set for 15 November 2026 at Bang Saen Beach, this is the full marathon companion to the popular Bangsaen21 half. Three distances (42K, 21K, 10K). Registration isn't open yet, but the Bang Saen beachfront setting is the proven draw.
Last updated August 4, 2026
Bangsaen42 is the full marathon extension of the Bangsaen21 concept: a beachfront road race on the Bang Saen coastal strip, roughly an hour from Bangkok. Three distances (42K, 21K, 10K) with the full marathon as the headliner. The November date offers cooling Gulf-of-Thailand conditions, and the flat coastal road is a genuine PB opportunity. Registration isn't open yet, but for runners who want the Bang Saen beach-race experience at the full marathon distance, this is the one to track.
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Bang Saen is roughly 80km from Bangkok, making it the most accessible beach destination for the capital's running community. [1] The coastal road is flat, wide, and palm-lined — a fast marathon course with sea views. November brings cool-season conditions to the Gulf coast.
If you want a beachside full marathon within an hour of Bangkok, track Bangsaen42. 15 November 2026 at Bang Saen Beach, Chonburi. [1]
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15 November 2026 at Bang Saen Beach, Chonburi, Thailand. It offers 42.2K, 21.1K, and 10K. Not confirmed this pass organises the event. Mark it on your calendar if you're planning your racing year around it. [1]
Planning to enter? See the full facts — dates, distances, pricing and registration — on the Bangsaen42 (Bangsaen Marathon) listing.
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