It doesn't appear there is live race tracking, but I'm not sure. It is a "chip" event, so maybe they will be posting splits (or at least timely results after the race). The marathon starts Sunday at 7:15 AM with is Saturday at 5:15 PM in Atlanta. Here is the website: http://www.runthebridge.com.au.
It should be an interesting run. It starts about a mile from my apartment on the north side of the harbor bridge and finishes at the Opera House. The post-race festivities are in Delane's favorite spot in Sydney....the Royal Gardens!
I'll be sure to post some post-race info. Wish me luck!