How to I get from Zhuhai to Foshan via the high speed trains? How long does it take?

For this trip, you may need to go to Guangzhou first. The high speed ride to Guangzhou would be around 1 hour. After you reach Guangzhou South Station, you can take bus or subway to get to Foshan. The bus would be around 1 hour and subway for around 1.5 hour or so.

Or maybe you can also think about a bus from Zhuhai to Foshan, I think there should be bus available like from Gongbei Bus Station, maybe 2 hours.