LEADVILLE, Colo. (CBS4) – Some marathoners had extra motivation to pick up their pace this weekend. A black bear crossed paths with runners participating in the Leadville Trail Marathon on Saturday.

(credit: Quentin Genke)

“When you run Leadville, you just might run into a bear!” Stephen Peterson wrote on Facebook.

READ MORE: Aurora Police Looking For Armed & Dangerous Carjacking Suspects

“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,” Peterson wrote. “Imagine our shock!”

Peterson said Genke snapped the photo just before the bear disappeared into the woods.

READ MORE: 2 Vehicles In Denver Medina Alert Now Found

(credit: Quentin Genke)

“First time I ever had a black bear come out of the woods and run between runners,” Quentin Genke wrote on Facebook.

“It was an amazing experience to witness!” Peterson told CBS4.

MORE NEWS: CU Boulder Students Pick Up Mess Left Behind From Violent Party On University Hill