Train from Taipei Main Station to Miaoli Sanyi Station

From Taipei, by high speed ride, you can only reach Miaoli. If you go by the round island rails, there maybe rides to Sanyi. Or you may go to Miaoli first and then take bus or taxi from Miaoli High Speed station to Miaoli railway station, then go to Sanyi by rail. The cost may around USD20 as it depends on the route, type and carriage you choose.