This cannot be answered properly without knowing how fast you are moving.
You drove 34 miles in 30 minutes at 68mph
At 30 mph it takes 40 minutes to drive 20 miles.
About 35 miles.
The distance is 23 miles, about 30 minutes to drive
About 30 minutes on the US Interstate highway system.
30 minutes is 1/2 hr. If you are travelling at 70mph, the in half an hour you will travel half of 70 which is 35 miles.
30 miles = 60 minutes 3 miles = 6 minutes 18 miles = 36 minutes
330 miles
1 hour 30 minutes
12 hours and 30 minutes.
It would take 30 minutes driving at 30 MPH.
1 hour 30 minutes.