4,000 miles is 6,437.4 kilometers.
From melborn to The gold coast or Alice springs is 4000 miles
About 4,135 miles.
Her exploration was 4000 miles
4000
About 4000 miles long.
4000 miles long
More then that.
That will depend on the speed you are driving at.
60 miles every hour 4000/60 = 66.67 hours
approximately 4000 miles.
You are probably referring to the Sahara Desert.
I'm thinking that's not what you wanted to ask but as written, the answer is 4000.