You can get these long distance busses from here ,
60 Colombo -Deniyaya/Akuressa/Urubokka/Deiyandara
32 Colombo -Kataragama/Tangalle/Hambantota/Lunugamwehera /Angunukolapelessa/Middeniya
42 Colombo Morawaka/Neluwa/Deniyaya/Udugama
26 Colombo -Hakmana/Walasmulla/Middeniya/Deiyandara
02 Colombo -Matara/Galle/Ambalangoda/Yatiyana/Urubokka/Akuressa
64 Galle Hatton/Balangoda
02/420 Galle -Padiyapelella
35/87 Tangalle Jaffna / Mullaitivu
usually a crowded place. can get buses to go to down south area and Matugama area
Every out station bus stops here, not enough cover in the bad weather
Following short distance buses ends here
400 Kalutara - Colombo
Following Long distance buses stops here
400 Aluthgama - Colombo
02 Ambalangoda - Colombo
02 Galle - Colombo
02 Matara - Colombo
32 Tangalle - Colombo
32 Kataragama - Colombo
430 Matugama - Colombo
435 Pelawatta - Colombo
24 Awiththawa - Colombo
401 Elpitiya - Colombo
42 Morawaka - Colombo
60 Akuressa - Colombo
60 Deniyaya - Colombo
26 Hakmana - Colombo
Every bus stopped,shady