It depends on how fast you drive. However, as an example, if you maintained an average speed of 65 mph, the time to cover 345 miles would be about 5 hours and 18 minutes of driving. You would have to add time for stops, detours and other delays.
3 hours
345/60=5.75 hours
345/65 = 5.3 hours
5 hours 45 minutes with no stops.
The total distance between the two locations is 345 miles. It will take about 5 hours and 25 minutes.
345/18=19 hrs 10 minutes
It is about 345 miles from Tucson to the Grand Canyon. The drive takes about 5.5 hours. Google Maps gives the mileage as 338 miles.
Answer: 345 mi. = 555.223 km
It will take about 5 hours and 18 minutes of total driving time at a constant 65 mph. Your total travel time will be longer if you slow down or stop along the way.
345 miles from north to south
A little bit over six hours of driving time plus time to refill the tank as it can only do 15 x 23 = 345 miles.
350/80 = 4.375 hours or 4 hours 22.5 minutes.
It is 345 miles according to Google Maps.