Nah - there are currently about 800 maps on the server - we have others, but this is the optimized set - it really needs to be "optimized" more - to remove all the slide maps that fail since being moved from classic race to mtadm.
A great percentage are made by DRuG members & friends, there's even quite a lot of betas on there of classic maps by their original mappers - back in the day they were actually developed then tested on our servers.
Recently the map "DeathRoad" by [DRuG]Grish was added, aside from that, there hasn't been a lot of activity in MTA race map dev - a lot of our time recently has been spent porting some of the classics across to our SAMP server,
http://www.aussiegameserver.com, which supports minimodes & has 100s of races, all with quite competitive records.. I highly recommend checking out our AGS/FDM SAMP servers - the scripts/modes etc were all developed by members of the DRuG crew, with maps by the entire community.. definitely not your average SAMP server.