When Bees Attack: What Colorado Hikers Need to Know

Bees love Western Colorado and the diverse natural habitat inside the Colorado National Monument. Most of the time, bees are very friendly, but after a hiker near Phoenix was swarmed by bees and stung over 100 times, things seem a little uneasy as the 2026 hiking season moves into spring.

The story of the bee swarm in Arizona is drawing attention from across the West, especially in places like Grand Junction, where warm weather and rugged trails offer similar conditions. It raises a chilling question: What’s stopping this from happening here?

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How Dangerous Is a Bee Swarm—And What Triggers It?

Read More: The Honeybee Festival Returns in 2026 With Big Changes

While a single bee sting is painful, dozens or hundreds can be life-threatening even to someone without allergies. It is the venom in the sting that can damage tissue, trigger allergic reactions, even anaphylaxis, and organ stress. We get told as kids that bees will not bother us if we do not bother them. Sometimes, hikers get too close to a hive, wear a strong scent the bees don’t like, or disturb brush or ground that is home to a colony. Vibrations or sudden noises are enough to provoke bees to swarm.

Killer Bees” and the Growing Risk in the West

The upside to hiking in Western Colorado is that you are more likely to spot orange-belted bumble bees and not Africanized honey bees—often called “killer bees,” like they have had in Arizona since the 90s. Fox Weather says Colorado isn’t a hotspot for them yet, but with shifting climate patterns and mild winters, they are bound to start visiting. Bees are yet another reason why Coloradans must stay alert on the trail, in remote rocky terrain where hives might be hidden.

What to Do If You’re Swarmed

Read More: Carrie Underwood Caught in a Swarm of Bees

If bees attack, run fast and protect your face. Easier said than done, right? It sounds terrifying to be swarmed by bees. Your goal should be to get inside a car or building as quickly as possible. For Colorado hikers, the takeaway is simple: stay alert, avoid disturbing brush or hidden hives, and skip any strong scents. These attacks are rare, but they escalate quickly.