Yes, they are similar. One is run in reverse with some extra turns and one has an extra gate added.
We chose these ones, as they are simple and fun. Should be easy enough to remember.
Chris' tip for remembering motorkhana's 101: Look at the map, then trace it with your finger while pointing at the skidpan. Do this a few times to make sure it's in your head. Once you think you have got it, put the event schedule behind your back, and if you can still point out the map with your finger, then you have committed it to memory.