An Oahu man is suddenly attacked by a cow during an intense obstacle course race in Kaneohe, and it's caught all on camera.
"There was a bunch of cows off to the left and I was going to run by them," said Matthew Kievlan. "One of the largest ones broke free and charged me."
Kievlan said he had just passed the second obstacle course in the Spartan race at Kualoa Ranch. He was almost to the finish line when the attack happened.
"I remember the thought going through my head, question mark, is this it?" he said.
Shortly after the attack, Kievlan says he blacked out and later found himself waking up in a hospital bed. "I didn't know who I was, I didn't know what year it was, I was completely gone."
A Spartan race is a series of obstacle courses including wall climbing, mud crawling, sprinting and fire jumping.
This was Keivlan's fourth spartan competition but the first time running into this dilemma.
"I would never have gone back there if I had known I could potentially face this kind of thing," he said. "That definitely was a deadly situation."
Kievlan is doing okay and in good spirits, but says he is disappointed he didn't finish the race.
He suggests race officials consider changing the course route in the future.
"It may be a lesson for us all to be aware of what can actually happen," Kievlan said. "I'm kind of at a loss for words of what happened. I don't really know what to think about it, but I'm really glad I survived."
Hawaii News Now reached out to Spartan Race officials for comment, but did not receive an immediate reply.