Note that news stories are saying that Jono Ride of Perth thru-hiked the Bibbulmun in 16d14h, but we do not have any details, such as when this occurred. This appears to be a new self-supported FKT.
Route: Bibbulmun Track (WA, Australia)
The Bibbulmun Track is one of the world’s great long distance walk trails, stretching 1000km from Kalamunda in the Perth Hills, to Albany on the south coast, winding through the heart of the scenic South West of Western Australia.
Note that besides the FKTs listed below, Jennifer Pharr-Davis indicated that she hiked the Bibbulmun in "21 days" in 2008, unsupported.