GTA races are essentially the same as Standard/Point-to-Point races, but with weapons and power-ups enabled.
Standard Lap races involve repeated timed laps around a set course and Point-to-Point races run from a start point to a finish point in another location. Standard Lap and Point to Point involves players driving through various checkpoints in the track before reaching the finish.
The Land Races are divided into three different types: Standard (Lap and Point to Point), GTA (Lap and Point to Point), and Rally.