Over rough terrain, the average walking speed can drop to 2.5 miles per hour. Climbing and descending hills can significantly slow down a walker. For example, walking 10 miles over flat terrain is estimated to take the average person 4 hours.
Trivia. 1  Mumbo's real first name is Oli. 2  He's really into cars. 3  His Instagram is @officialmumbo.  He has a bengal cat named 1  Benji. Everytime he does something dumb, he calls himself a moron or a spoon.  He used to use an excess of stone 1  bricks. The YouTube account was originally a collaboration between him, Mumbo, and his friend, Jumbo.
The illegitimate son of Elizabeth Hungerford Keate Macie and Hugh Smithson, 1st Duke of Northumberland, he changed his name as well as his citizenship, becoming a naturalized British citizen around the age of ten. After his parents' death, he became known as James Smithson rather than James Macie.