Running Routes: Norcross, GA - 8 mile run?

I will be visiting Norcross, GA next month on business and staying at the Mariott Residence Inn.  Any suggestions for a safe area to do an 8 mile run or even a 4 mile run on which I can backtrack (which might be easier if I have to drive to the route start) to make a total of 8 miles?  I'm currently training for a half-marathon in January.  Thanks in advance!