How fast is the antelope?

Answer 1

It really depends on the exact species as some are a lot slower than others.

For example, the Pronghorn is noted as the second fastest animal on earth, runner up to only the famous cheetah. Running at speeds of 40 to 50 mile per hour (about 70 to 80 kph) it can not top the cheetahs speed over short distances, however it can maintain these top speeds for much longer, miles at a time. They have large lungs are heart and their hair is hollow, all factors that allow the animals to run for much longer periods.
20 mph
it can run 40 miles per hour.
Trust me they are very fast. They can go 60kph or if you prefer 40mph. If a Cheetah chases it, it can run for almost an hour. The Cheetah Can't run for that long. They're fast but only for a short while. If the Antelope is lucky it can outrun the Cheetah.
It can run exceptionally fast, being built for maximum predator evasion through running, and is generally accepted to be the fastest land mammal in The New World. The top speed is very hard to measure accurately and varies between individuals; it is variously cited as up to 70 km/h,[4] 72 km/h,[3] or 86 km/h.[5] It is often cited as the second-fastest land animal, second only to the Cheetah.[7] It can however sustain high speeds longer than Cheetahs. It has a very large heart and lungs, and their hair is hollow. Although built for speed, it is a very poor jumper.

Answer 2

Second in land speed only to the cheetah, the pronghorn can make 55 mph- for half a mile.