How to stay safe when running in the heat
Running in the Heat: What You Need to Know
Running during hot weather can be a great way to gain new training adaptations, but it also comes with serious risks if you’re not careful. High temperatures, humidity, and direct sun exposure can quickly push your body past its limits, especially if you’re not acclimated to the heat. While staying consistent with your training is important, it’s equally vital to respect the conditions—your safety comes first.
Why Running in the Heat Can Be Dangerous
When you run, your body generates heat. To cool itself, it sweats and redirects blood flow to the skin. In hot and humid conditions, this cooling process becomes less efficient. If your body can’t release heat fast enough, your core temperature can rise to dangerous levels. This increases your risk of dehydration, heat exhaustion, or even heat stroke—a life-threatening emergency. According to the CDC, over 700 people die from extreme heat each year in the U.S. In North Carolina, heat-related illnesses spike during the summer months, especially during heat waves and high humidity.
Key Heat-Related Conditions and Their Symptoms
- Dehydration – mild
- Dry mouth, thirst, fatigue, dizziness
- Heat cramps – mild
- Painful cramps, sweating
- Heat exhaustion – moderate
- Heavy sweating, weakness, nausea
- Heat stroke -severe/ emergency
- No sweating, hot skin, collapse, confusion
What to Do if You Notice These Symptoms
If you or someone else starts showing signs of heat-related illness:
- Stop immediately and move to a shaded or air-conditioned area
- Hydrate with cool water or an electrolyte drink
- Cool down using cold towels, fans, or an ice pack on the neck/armpits
- Loosen or remove extra clothing
- Call 911 if symptoms suggest heat stroke—especially confusion, fainting, or dry, hot skin
Running in the heat comes with real risks—but with awareness and the right precautions, you can stay safe. Know the symptoms of heat-related illness, listen to your body, and don’t push through if something feels off. If you feel lightheaded, dizzy, or overly fatigued, don’t continue running—especially in a secluded area. It’s not worth the risk. And if you’re running with others, keep an eye on each other. A simple check-in could prevent a serious emergency.
Stay smart, stay safe, and keep running strong—even in the heat.