By ship
Ratchadaphisek is not easy to reach by boat, but the Saen Saep Express Boat service does have some stops at the south side of the district. It generally is the fastest way to get into Ratchadaphisek if coming from Rattanakosin, Khao San Road or Dusit. A single trip from Rattanakosin to the district takes about 30 minutes including a transfer at Pratunam pier and costs around 8 to 20 baht. The most important pier is Asoke-Petchaburi, which is at walking distance of Ratchadaphisek Road. From there it is possible to transfer to the metro at nearby Phetchaburi MRT station. If you're heading for Royal City Avenue RCA, you can get out at Wat Mai Chonglom pier. Other piers that border the district are Prasanmit, Italthai, Soi Thonglor and Charn Issara. All of these piers are served by the NIDA Line, which starts at Pratunam pier and runs all the way northeast to Ramkhamhaeng.
By bus
There are about 20 bus lines covering Ratchadaphisek Road. Ordinary and air-conditioned bus 136 starts at the Khlong Toei Market near Sukhumvit and then follows the MRT northwards, along the Queen Sirikit National Convention Centre, Asoke Road and Ratchadaphisek Road. It passes Sutthisan, Lat Phrao and Phahon Yothin MRT stations before heading for Chatuchak Weekend Market and the Northern Bus Terminal Mo Chit. Ordinary and air-conditioned bus 206 also runs from Asoke Road north, along Ratchadaphisek Road to the intersection with Phahonyothin Road. Ordinary and air-conditioned bus 514 traverses Silom Road and drives along Ratchadamri Road, Ratchaprarop Road, Victory Monument and Din Daeng Road to the intersection with Asoke Road, where it heads north along Ratchadaphisek Road to the intersection with Lat Phrao Road.
By Public Transit
Since 2004, Ratchadaphisek has been completely served by the MRT metro system. The line exactly follows Ratchadaphisek Road with plenty of stops on it. If you are coming from Silom, Sukhumvit, Siam Square or Yaowarat and Phahurat, the metro is definitely the most convenient way to get in. The stations are, from south to north, Phetchaburi, Phra Ram 9, Thailand Cultural Centre, Huai Khwang, Sutthisan and Ratchadaphisek. The metro ride from Sukhumvit station takes about five to ten minutes, while the ride from Si Lom station takes about ten to fifteen minutes. Trains leave every five to ten minutes for a fare of about 16 to 41 baht.
By taxi
You can also pull over a taxi â it's okay to say Ratchada "RAHT-cha-dah" รัà¸à¸à¸², as everybody abbreviates it. Taxis are a comfortable way of getting around Ratchadaphisek, especially if you have to be in one of its sois, which can be complicated to navigate in. A ride from Sukhumvit should not cost you more than 50 baht, while a ride from Silom should not cost you more than 70 baht.