This list will be updated if new shortcuts are found.

Crash Cove NMZ: 
https://www.youtube.com/watch?v=V971X6N1R14
https://www.youtube.com/watch?v=n7W2koKZmUM

Papu's Pyramid NMZ:
https://www.youtube.com/watch?v=tcxaS6yyjrs
https://www.youtube.com/watch?v=iUOb2YkBjuo

Tiny Arena Startline Glitch:
https://www.youtube.com/watch?v=Tlp1zNuu1SA
https://www.youtube.com/watch?v=iDiZ8Rrb6xs

Oxide Station Nyxx SC:
https://youtu.be/mwYXKnW9AuY?t=24

List of banned shortcuts for Classic

TheRedhotbr

Natty

Lornoveo

juniorSM

Crash Team Racing Speedrun IGT

PlayStation 2

PlayStation

Ahvena

DarkSlayerAA

Glisin

USA / NTSC

JPN / NTSC

Classic

No Major Glitches

Standard

Penta

Style

Engine

Crash Bandicoot Mods

CTR Speedrun In-Game Time mod Release v1.0

There’s One More Version Y’all Forgot

Niikasd