red sox, from your prior experience in viewing the RFF research process on Amazing Races, you will know that it is practically impossible to know where the Race is going in advance. We can guess and anticipate, but never know until it is actually there and we have photographic evidence of being in a specific place. This occurs one to several months in advance of the public showing of the race on TV in the U.S., so it is sufficient to meet the needs of forum members if we get that evidence close to or soon after the actual times.
The best way to know that a Race is going to Australia is if it is known to be in a close-by country like India, Singapore, Malaysia, Vietnam, Philippines, Hong Kong or New Zealand. Once you get word of any of those happening, you need to be super-vigilant.