Bears can run at speeds of up to 35 miles per hour! You? Not even downhill. Whether it's an open field or a vertical mountainside, a Grizzly bear's strength, agility, and speed make them an efficient traveler and predator. This short video, captured during a brief survey of collared grizzlies, illustrates why you should never try to outrun a grizzly or black bear. Instead, try your best to prevent these encounters in the first place by making noise, traveling in groups, and being aware of your s