At 60 miles per hour, you can travel 1 mile in one minute. Sixty miles per is the standard. At 12 miles per hour it takes 5 minutes to travel 1 mile. 60/12 = 5.
It takes about 2 minutes and 24 seconds at a steady 25 mph.
Approximately half a minute.
12 MPH means you can go 12 miles in 60 minutes For running, that's a good mile - 5 minutes every 1 mile, assuming you keep that pace. For biking, 12 MPH is not that fast, but still a liesurely pace. For driving, 12 MPH would seem very slow. But that all depends where you are driving. On highways in would seem an exceptionally slow pace. But on a rustic gravel road, maybe not. It all depends on perspective.
About 163 mph
1 minute 12 seconds.
20 minutes 34 seconds.
About nine seconds.
It will take 45 seconds.