Welcome to RC India
Since you mentioned "drag racing" versus just "racing"... do you mean the RC cars would be of explosive acceleration like in the ful size drag cars AND the race track would be just a straight track ?
There are lots of threads on RC car racing events posted here already, where you can see pictures and videos of the tracks, and you can also see the categories of cars, competition rules etc. Just look under "Cars" and "Events", or do some searches on this forum.