I recently finished a glitchless run of Kirby: Canvas Course. Since I intend to submit the movie file, I posted the full run as a WIP (
User movie #638603222047170630).
Using BizHawk 2.9.1, I tried everything possible to avoid glitches in Kirby: Canvas Course. It resulted in a time of 55:39 (RTA timing 55:34), but the frame rate is 59.826 instead of 60. I also found the in-game time to be 50 minutes because the movie starts at a fixed time of 1/1/2010 00:00. I need to double-check for both Paint Roller levels where the lines are missing while I draw something to reveal an image.
I thought TAS must beat the record set for speedrun.com. In this case, it was at least 30 seconds faster than
the fastest any% category (it was either glitched or glitchless; most speedruns in Kirby: Canvas Course were glitchless).