It's really hard to tell as it depends on a lot of circumstances. On roads, and at a moderate effort I can do it in about 45 minutes. A racer, going flat out could probably make it in 25-30. Most would be able to do it in about one hour.
Depends on a lot of things. A fit rider can do 20 MPH for several hours under reasonably easy riding conditions, so maybe as little as one hour. But someone who's less fit, has a poorer bike, or rides somewhere more difficult - anything between 2-3 hours.
Depends on the human, the bike, the terrain and the weather. I could probably do it on my commuter bike in 40 minutes of riding, assuming good weather and a flattish course. A group of more dedicated riders on betters bikes should be able to polish it off in less than 30 minutes. Someone else may need more than one hour.
About an hour and a half to two hours
20 k is 20 kilometers, or 12.5 miles
That depends entirely on how fast you cycle, or, if you have legs.
If that is 20 kilometers it can be around 30 minutes, but would depend a lot on the course.
There's no telling. For road bikes in flattish terrain it'd be less than 30 minutes. For MTBs in flattish terrain it could be 45 minutes. For MTBs in difficult terrain it could be one hour.
There's no set speed for bike riding so it varies. A good racer on fairly flat roads should do it in 30 minutes. I'd do it in about 40. Some may need a whole hour or even more.
Less than 30 minutes
Around 20kms or 15mins.
cycling it is good for the respiratory system cycling it is good for the respiratory system
20kms i just jokeing 20cms i belive
If done with due consideration, cycling is always good.
Cycling Time Trials was created in 2002.
a cycling affects it cause the cycling isnt right at that time
on wii resort there is a cycling game which is excellent!
Cycling gear can be bought from your local sporting goods store. Alternatively more specialised cycling gear can be bought from a specialist cycling store.
As a precaution it is good to wear a helmet when cycling.
Fill tires to correct pressures and then drive for 20 min, above 20kms/hr.
One can purchase cycling bikes from the local retailers like Walmart and Target. Some specialized cycling stores also offer brand quality cycling bikes at a very good price.