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.
Jumbo, P. T. Barnum's elephant whose name is the origin of the word jumbo (meaning very large or oversized). The African elephant was given the name Jumbo by zookeepers at the London Zoo. The name was most likely derived from the Swahili word jumbe meaning chief. The Tufts University mascot is named after Jumbo.