maps...your location...directions wouldn't work

I drove from my city to another..about 40 minutes Google maps, your location,  turn by turn directions worked great....a week later I drove from my city to another (opposite direction) about 60 minutes away and all I could get was the circle going round and round? It was a well populated urban area I was driving through?   It never it is working fine for just a local trip...not the same area where it didn't work the other day.    What happened?