1- check your race map, make sure the trigger_move are correctly linked to func_gameaction to make CT win or TR win, and if possible, use a map whit the less teleports possible, because sometimes it can lag due to movement problems, probably this will be fixed for the next release
2- go to options > more > damagefactor, put it zero, or a very low value, so theres no kill, you can still write in the console "mp_wpndmg knife 0", so knifes have absolutely no damage, just to assure no kill, also put dm_spawnmoney to zero, in case u forget to put a info_nobuying in the map
3- in the server settings, put freeze time to 5, so players can have a countdown and get prepared, usefull for a little chat before race, and players dont get behind and its fair to everyone, and put startmoney to zero, just in case u forget to put a info_nobuying in your map
its very simple to set up a race server, but some admins may dont know that, hope this helps someway
and remember : BAN ANY SPEEDHACKERS!!! BAN IP!!!