How fast does someone go riding a bicycle?

Question

How fast does someone go riding a bicycle?

Answer 1

Flats, no wind, road bike - 25 MPH.

Down a 13% grade - 42 mph

Down a sweet 8% grade in Tahoe at 8900 ft, tucked tight - 49.5 MPH

Answer 2

well with head wind at 15mph i go average 15-17mph but no wind light road bike 25mph on average  up hill 15% grade 15mph  down hill 8% grade  40mph with wind helping me about 30mph on average

Answer 3

I don't know.  How fast?

Answer 4

if you see a road biker going a non-extrenuous  pace on a flat road it is probably 20-30 mph.

Answer 5

I can get my bmx bike to go 22mph i use those  police trailers the put on the streets to tell you how fast your going it works

Answer 6

It depends on a LOT of things: Equipment, weather, the condition of the rider, slope of the road...etc...

I can comfortably bike to work at 12-16 mph on my mountain bike. That's a 7.3 mile uphill (gradual) ride....the big thing I worry about is wind direction.  A biker on a bike that is on flat level ground, no wind, can expend about 1 hp of energy to go 5 miles an hour or so...as you start to get over 10 or 12 mph, though, you have to start dealing with wind resistance. IN a a 20 mph headwind, and you're trying to maintain a speed of 12 mph (speedometer ground speed), the wind will be hitting you at a combined speed of 32 mph. You need to expend a LOT of energy to just keep going...

BUT:

Cycling is a sport, which requires the use of a bicycle. The Oliver brothers organized the first competition on May 31, 1968. In cycling sports in most cases, is a test for endurance rather than speed. The fastest speed according to the Encyclopedia Britannica was 204.73 kph in France on July 16, 1962 by Jose Meiffret. It might seem extremely fast, but that is nothing compared to the speeds achieved today with our advanced technology.

Other than the rider's training, genetic make up and competitiveness, the bicycle is the key aspect in speed and efficiency. This bicycle, called "the Ultimate", along with its rider Bruce Bursford, broke the world speed record of 334.6 km/h. This design was made aerodynamically efficient to cut down wind resistance. Just a gentle breeze? No, 90% of the resistance you feel is from the wind. This aerodynamic drag is made up of air pressure drag and direct friction, which pulls you backwards. Thus a drafting technique is used. The cyclist rides behind a larger vehicle or another cyclist that cuts through the air and 40% of the cyclist's energy is conserved. It is proven that cycling is the most efficient way of traveling because it takes only 100 calories for a cyclist to burn, for a result of 4828.03 m, while a car would die out after 85.34 m with the same amount of energy.

Answer 7

With hardly any wind- when I ride my mountain bike on the road my speedometer shows I am able to go 30.1 mph!