24 hours, Australasian regional championships

The organisers published the following on the 7th of February 2015 -

"EMBARGO: The area under embargo for ARC2015 is the Capertee National Park and Muri Murum-ban State Conservation area. This area is bounded by Glen Davis Rd to the south, the railway line to the west, and private properties to the east and north."

More about course, "The event will be held on great rogaining country about 3.5 hours west of central Sydney (perhaps slightly longer on a Friday night).
The course will offer great variety for all: open bushland, scenic creeks and river flats and magical vistas. There are rolling hills and - of course - one or two steeper hills (it wouldn't be a NSW rogaine without one).
If you're not aiming for the pointy end of the competition, you may get distracted at a swimming hole, and you are sure to spot some wildlife (kangaroos, wombats, pigs, more birds than you can poke a stick at and maybe even an echidna)."