It'd depend a lot on fitness, terrain, choice of bike and level of dedication. On road, with my commuter bike, I'd do it in just under one hour. A proper road rider can probably do it in 45 minutes. Riding singletrack on my MTB, could even be two hours.
it obviously depends how fast you can ride a bike and how long you can go without stopping
1:02:17
600 miles from pompeii to Paris
3 hours 30 minutes.
Since a stationary bike doesn't move, there's no way it can travel 20 miles. Now, if you're asking how long it would take to ride twenty miles on a bicycle, it depends on speed, wind, and other factors. Typically a bike maximum speed is about 20 miles per hour. So it would take about an hour to ride 20 miles on a REGULAR moving bicycle.
20 minutes.
if your speed is 4 miles per hour it takes an hour,at 8mph it takes 30 minutes.
It depends on your speed, but on average it should take somewhere between 5-10 minutes per mile. Totalling to about 130-260 minutes. (2hrs10mins - 4hrs20mins)
4 hours 9 minutes.
It should take 3 hours at 65mph.
If you could hitch a ride on a beam of light the trip would still take 142,241.14 years to go 17 quintillion miles.
If you drive at 60mph (miles per hour) it should take about 3hours and 15minutes