What is the maximum speed on land of ostrich?

Answering "What is the maximum speed on land of an ostrich? Ostriches have been recorded at speed of 45mph (72km/h) in a short burst. That is faster than a race horse, which has been recorded doing 43mph 69km/h over one fourth of a mile (402meters). Their foot strides are between 5-7m (16-23ft) at full speed and they can keep running for around 20 min at 30mph (48km/h). This is becomes they are birds, and unlike humans and other mammals, they can use 100% of their lung capacity, thus obtaining more oxygen. There is video footage of two lionesses chasing and catching an ostrich. Normally only cheetah are fast enough to catch them. However, this is not very common because ostriches are very fast and they can keep running for a long time. They have two large toes that give them good grip when run. And they can also change direction quickly at full speed. They can also use their sharp toes to kick predators. A cheetah has been filmed chasing ostriches, but the ostriches changed direction very quickly, making it very difficult for the cheetah to catch them. An adult ostrich weighs around 150kg (330Ib) and normally lives around 50 years. written by JPBiggs 27.06.08