First Fatal Mountain Lion Attack in Colorado in 25 Years: What Happened and How to Stay Safe (2026)

A tragic event has shaken the hiking community: A woman was killed in a suspected mountain lion attack while hiking alone in northern Colorado. This incident marks the first fatal mountain lion attack in the state in over 25 years, a sobering reminder of the inherent risks of venturing into the wild.

Authorities responded swiftly, locating and fatally shooting two mountain lions in the vicinity. The attack occurred in the mountainous region south of Glen Haven, near Estes Park, a gateway to Rocky Mountain National Park.

According to Kara Van Hoose with Colorado Parks and Wildlife, shortly before noon, two hikers came across a mountain lion near the victim's body along the Crosier Mountain trail. The hikers attempted to scare the animal away, and one of them, a physician, attended to the victim, but sadly, found no pulse. Details regarding the woman's injuries and the precise cause of death have not been released.

Wildlife officials are conducting a necropsy to determine if either or both of the killed mountain lions were responsible for the attack. A search for a third mountain lion reported in the area was ongoing, and trail closures remained in effect while the search continued. The fate of the third lion would depend on the circumstances.

Mountain lion sightings are common in this forested area, but documented attacks on humans have been rare. Van Hoose noted that it's a typical time of year for sightings in Larimer County, which provides excellent mountain lion habitat. The trails in this area are remote, with wooded and rocky terrain and significant elevation changes.

In a separate incident, Gary Messina recounted a frightening encounter on the same trail. While running on a dark November morning, he saw a mountain lion. The animal lunged at him, and he fought it off, using a stick to defend himself. He reported the encounter to wildlife officials, who subsequently posted warning signs in the area.

But here's where it gets controversial... Mountain lion attacks are exceptionally rare. Colorado's last suspected fatal attack was in 1999, involving a 3-year-old. Two years prior, a 10-year-old boy was killed in Rocky Mountain National Park.

In Northern California, a similar incident occurred last year, where two brothers were attacked by a mountain lion, resulting in the death of one. These animals, also known as cougars or catamounts, can weigh up to 130 pounds and grow to over six feet long. Their primary prey is deer.

Colorado's mountain lion population is estimated to be between 3,800-4,400. They are classified as a big game species and are subject to hunting regulations.

And this is the part most people miss... The article is a news report from The Associated Press, an independent, non-profit news cooperative.

What are your thoughts on this tragic event? Do you think more should be done to manage mountain lion populations, or do you believe these attacks are simply unavoidable risks of enjoying the wilderness? Share your opinions in the comments below.

First Fatal Mountain Lion Attack in Colorado in 25 Years: What Happened and How to Stay Safe (2026)

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