A list of things to do in Rayong in December 2026.
5 December 2026
PluakDaeng Super Half Marathon #4
Saturday 5 December 2026
Pluak Daeng Subdistrict Municipality, Pluak Daeng
Road race: 22 / 10.5 / 5 km.
5–6 December 2026
Thailand International Dragon Boat Festival 2026
Saturday 5 – Sunday 6 December 2026
Royal Thai Navy Rowing and Canoeing Training Centre, Bang Phai Reservoir, Ban Chang
An international dragon boat regatta with crews from 11 countries, racing 500 m heats through to finals. It opens with a ceremony on the Saturday.
6 December 2026
Mae Ramphueng beach cleanup
Sunday 6 December 2026
Mae Ramphueng Beach
Community cleanup, first Sunday of the month.
Mae Ramphueng Beachfriends · Map
Souldinary Music & Trail
Sunday 6 December 2026, 16:00–23:59
Phu Nang Yong, Ban Chang
An outdoor dream-pop evening in the hills with Anatomy Rabbit, Plasui Plasui, Lost Polaroid and Unbalance.
20 December 2026
Ocean Crossing Series 2026: Mae Phim – Koh Talu
Sunday 20 December 2026
Mae Phim Beach → Koh Talu
Open-water swim from the mainland to Koh Talu: 11.11 / 5 / 2 km.
Event venues: What’s on in Rayong 2026
Race-day tips
Register through the organiser’s page linked under each event. Start times, routes, kit collection and parking details are published there and can change, so check again in the week before. Runs and swims in Thailand start early to beat the heat. Bring water and sun protection, and plan to be on site well before your start.
Joining the beach cleanup
The Mae Ramphueng beach cleanup is on the first Sunday of the month. Mae Ramphueng Beachfriends organises it. Bring a hat, water and a reusable bag or gloves.