Mizuno River Kwai International Half Marathon 2011
Period: 11 Sep 2011
Venue: River Kwai Village Hotel, Sai Yok, Kanchanaburi
Description: The River Kwai Half Marathon is the oldest road race in Thailand. Organized by Amazing Field with pioneering race director Songkram Kraisonthi, the 30th edition of the race will be held on 11 Sep 2011 with the start and finish at River Kwai Village Resort. The out and back course is one of the most scenic in Thailand. It takes runners up a gradual climb to the turn around point at 10.5 km. The declining return leg to the finish line will make for a fast second half of the race and most runners normally post a negative split at this race. There is also a 10K Run on offer which uses the same course with an earlier turn around point. Entries are limited to 1,500 runners and the race has sold out in previous years.
Reference: http://www.tourismthailand.org/see-do/events-festivals/

Thai Merit Making and Long Boat Racing Festival
Period: 12 Sep 2011
Venue: Thawi Phun Rangsan Temple, Ongkharak, Nakhon Nayok
Description: The fair showcases a variety of long boats racing, making Krayasat contest (Krayasat is a sticky paste made from rice, bean, sesame, and sugar, usually eaten during Sat Thai Festival), merit making on Sat Thai day, and local entertainment at night.
Reference: http://www.tourismthailand.org/see-do/events-festivals/

Long-Tailed Boat Competition for Royal Championship Cup 2011
Period: 17 Sep 2011 – 18 Sep 2011
Venue: Nan River, Pichit
Description: Activities include long-tailed boat competition, boats parades competition, beautiful women contests, products store and performances
Reference: http://www.tourismthailand.org/see-do/events-festivals/

Bangkok's 13 th International Festival of Dance and Music
Period: 19 Sep 2011 – 16 Oct 2011
Venue: Thailand Cultural Center, Ratchadapisek Road, Bangkok
Description: Bangkok's International Festival of Dance & Music is the largest annual performing arts festival in Thailand. It presents artistes and theatres from around the globe in a balanced programme of classical concerts, operas, classical ballets, contemporary and world dances – and the occasional less common genre such as fado and ballet on ice.    
Reference: http://www.bangkokfestivals.com/main.php

Centennial Memorial Day of Koh Si Chang
Period: 19 Sep 2011 – 20 Sep 2011
Venue: Phra Chuthathut Ratchatha, Koh Sichang, Chonburi
Description: Activities include worshiping King Rama V ; Thai traditional outfit contest ; a rt and cultural performances ; r ecreational activities, light and sound show
Reference: http://www.tourismthailand.org/see-do/events-festivals/

Shell Eating, Bird Watching and Squid Angling Festival
Period: 23 Sep 2011 – 2 Oct 2011
Venue: Cha Am Beach
Description: Activities include shopping sea food at the booth from more than 50 famous hotels in Cha-Am; joining the seeing birds' tour and sailing to angle the squid at night; seeing the cultural performance every night
Reference: http://www.tourismthailand.org/see-do/events-festivals/

Long-Tailed Boat Traditional Competition
Period: 30 Sep 2011 – 1 Oct 2011
Venue: Chao Phra Ya River, Nakornsawan
Description: Activities include exhibitions; OTOP products booths; long-tailed boat from all around province competition and Ta Kea (local long-tailed boat competition for 7 participants)
Reference: http://www.tourismthailand.org/see-do/events-festivals/

BOI Fair 2011
Period: 10 Nov 2011 – 25 Nov 2011
Venue: Impact Arena Muang Thong Thani, Nonthaburi, Bangkok
Description: Thailand's largest exhibition fair organized by the Office of the Board of Investment (BOI) is now revitalized to show the country's investment potentials on sustainable development. The event aims to demonstrate the achievements and the potentials of Thai industry while showcase new technologies and innovations, which will enhance the industry's efficiency and its competitiveness. Significant environment-friendly production methods will also be highlighted to encourage the industry as a whole to coexist comfortably and productively with Thai society and the country's natural environment.
Reference: http://www.boifair2011.com/view/en/home/home.jsf

The 1 st Thailand Team Amateur Championship
Period: 26 Nov 2011 – 3 Dec 2011
Venue: Hua Hin
Description: This first edition will take place in Hua Hin the most and traditional Thai holiday resort, situated 200 km south of Bangkok. The Participants will play 5 rounds of golf: 2 practice rounds and 3 rounds of tournament play. The 3 golf courses we selected are simply great! Black Mountain Golf Club, site of the Asian Tours “Black Mountain Masters” 2009 and 2010, plus the 2011 “Royal Trophy”. Banyan Golf Club won top prestigious golf awards at the Asia Pacific Golf Summit 2010. Springfield Royal Golf Club, designed by Jack Nicklaus in 1993, has long been one of Thailand's most popular golf courses.
Reference: http://www.teamamateurchampionship.com/