Here are some CTR videos done with tools, some with allowed emulators and others with only the save state feature.
Crash Cove Lap 25.24
http://www.youtube.com/watch?v=EQylZucSCgY
I couldn't even beat my own record, 25:18 (2009).
Crash Cove Total 1:17:97
http://www.youtube.com/watch?v=6tLKJ_GK-uc
Author initially pretended it was tooless.
Coco Park Lal 23.09
http://www.youtube.com/watch?v=dw1AWaBpMSs
Author claims it was done without save states, but I don't buy this...
Dingo Canyon Lap 25.15
http://www.youtube.com/watch?v=8DvFd1GmqH8
Keeps speed ghost until the end. Almost impossible for humans.
Polar Pass Lap 35.22
http://www.youtube.com/watch?v=4Jx8U4b9ahQ
Using the NTSC-J version.
Cortex Castle Lap 38.25
http://www.youtube.com/watch?v=FE_xSjT8hZQ
Author initially pretended it was tooless.
Hot Air Skyway Lap 22.96
http://www.youtube.com/watch?v=IzTO0cjMq34
Starts the lap with ultimate sacred fire (nearly impossible to turn well for humans). Then, performs a shortcut that can't be done without USF. The rest is just like the WR.
Oxide Station Lap 36.85
http://www.youtube.com/watch?v=jc5TvC1ANXc
Didn't break the WR, but it would with the PAL version and the shortcuts done by speedrunners.