Depends on a lot of things. A fit rider can do 20 MPH for several hours under reasonably easy riding conditions, so with a few pit stops you'd might be able to pull it off in just under two hours.
Or you may need the double, if you're not as fit, if your bike is poor or if riding conditions are poor.
it obviously depends how fast you can ride a bike and how long you can go without stopping
The time it takes to ride 8 miles on a bike depends on your speed. On average, it would take about 30-45 minutes to ride 8 miles at a moderate pace of 12-16 miles per hour.
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.
I presume you mean how long will it take for a 12 miles bike ride. It depends on how fast you can bike, if it's uphill or downhill. The average is between 8-13 mph for most people to bike on a 10-speed on the whole. By that measurement, it could take 50-90 minutes or so on the average.
26 divided by 8 equals 3.25 hours or 3 hours and 15 minutes
A: 9 hours.
The time it takes to ride a bike from your house to the park depends on the distance between the two locations and your biking speed.
3 hours
Three hours (30/10 = 3).
20/12 = 5/3 hour = 12/3 hours = 1hour 40minutes