Bears can run up to 60 kilometers per hour, which is approximately 37 miles per hour. While there's a common myth that bears are unable to run down hill, they very much can, and their speed is generally considered one of the deadliest factors of human-bear encounters.
A bear's speed on land varies from species to species. Black bears are the fastest, followed by grizzly bears, which can run up to 30 miles per hour. Humans, on the other hand, clock in at an average of 45 kilometers per hour, or 28 miles per hour. This speed is slightly less than a house cat's.