If anyone is wondering what the Permanent Invincibility Glitch is (and why it is banned), here is an explanation of it. When you take damage, you have a short period of invincibility. In this state, you cannot be damaged by enemies, fire, falling off the edge, or ANYTHING. You simply cannot die. To make this invincibility last indefinitely, you must simply quit the game (right-click --> Quit, or hit 'X' in a custom level) while you are still invincible. Then, when you play again, or start a new game, you will be totally invincible, and if you fall off the course, you will just fall and fall and fall. Forever. The only way to end the glitch (without refreshing/reloading the whole game) is to collect a Mushroom/Fire Flower.

The reason the glitch is banned is because it makes the game very boring, and one would have to do very well without the glitch to make it faster than with it. If someone wants me to add a category where Permanent Invincibility IS allowed, just ask and I will do it.

id say have any% where this is allowed, most commonly ran will just be any% no invincibility glitch

I can add that. I'd say that probably you should have to start the game and the timer w/o Permanent Invincibility Glitch, so that setting up the glitch is timed into the run.