Why not Individual Races in that you have to complete them in time trials?

theres probably another site for that tbh

There is: http://www.mkwrs.com/mk7/

ok thanks

The MKWRs site that BlackYoshi123 linked to is the go-to place for WRs, but if you want leaderboards then you should head to the Players' Page: http://www.mariokart64.com/mk7/.