Runners who were taking part in the Leadville Trail Marathon in Colorado on Saturday have shared their shock, after a black bear jumped out between runners and ran across the trial.

Giving runners extra motivation to pick up the pace, or stop and get their camera phones out, the bear ran out from the woods, across the trail busy with runners, and back into the woods on the other side.

Quentin Genke

Black bears are one of the fastest species of bears, and can easily outrun a human when sprinting. In fact, the evidence shows that bears can run at speeds of 35 miles per hour quite comfortably when they want to.

Runner Stephen Peterson wrote on Facebook, “When you run Leadville, you just might run into a bear! My good friend Quentin Genke and I were a couple of hours into our race when this huge black bear made his appearance right in front of us, imagine our shock!”

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