It depends on how fast you are driving. At a speed of 50 mph, it would take 16 hours and 48 minutes. At 60 mph, it would take 14 hours. At 70 mph, it would take 12 hours.
14 hours.
840/70 = 12 hours.
The total distance between the two locations is 840 miles. It will take about 12 hours and 5 minutes.
http://www.infoplease.com/ipa/A0001801.html
It is around 837-840 miles.
Interstate 840 (I-840), is a 77 miles loop interstate highway around Nashville, Tennessee.
840 miles or a 13.5 hour drive
the state of California is 840 miles long.
lake Tahoe
840 meters is 0.52 miles.
840 miles = ~0.0000090365521499 AU
That state of California has 840 miles of coastline.