Thousands of red shirts from the North and the Northeast have started their march Friday's morning, expecting to reach Bangkok by Sunday.
Those from the North are expected to converge and stay overnight in Nakhon Sawan while those from the Northeast will spend the night at Nakhon Ratchasima.
Before departing their respective hometowns, the red shirts organised a series of ceremonies to pay respect to and ask for the blessing of deities revered in their towns.
Colourful departure ceremonies were held in Chiang Mai. Lampang, Udon Thani and Ubon Ratchathani.
In Chachoengsao, the red shirts flocked to pay respect to Luang Phor Sothorn, a revered Buddha statue.
By midday in Bangkok, hundreds of red shirts have begun to congregate at five locations designated for cursing ceremonies to kick off the Sunday's mass rally.
The five locations are Lak Si Circle, Taksin Circle, Lumpini Park, Bangna Intersection and Din Daeng Junction.
Police have advised motorists to avoid routes to and from the five locations.
