Our species, Homo sapiens, arrived in Australia about 50,000 years ago. Although the sea level was much lower at this time and much of Southeast Asia was a single land mass (referred to as Sunda), the trip still would've required traveling many kilometers across open water.
When our species, Homo sapiens, left Africa for Europe and Asia about 80,000 years ago, they almost certainly would've encountered other species of early humans. Our ancestor, Homo erectus, had made it to Europe and Asia 1 million years earlier!
Our species, Homo sapiens, appeared around 200,000 years ago in East Africa.
Our species, Homo sapiens, inhabited the world at the same time as other human species, often living close to one another. In fact, Homo erectus, Homo floresiensis, Homo neaderthalensis, and Homo sapiens all co-inhabited the earth only 70,000 years ago.
While our species, Homo sapiens, has been around for about 200,000 years, several other species of early humans had survived for much longer before their extinction.
On average, a person will walk the equivalent of 5 times around the world in their lifetime: over 200 quintillion (2·1018) steps.