Her Miles

Running plans & motivation for women who move

How to Keep Running When It's 90°F: A Hot-Weather Survival Guide

2026-07-09

You laced up, stepped outside, and the heat hit you like a wall. Three minutes in, you’re already questioning your life choices. Summer running is hard — but quitting until October isn’t the answer.

The secret isn’t toughing it out. It’s running smarter. Here’s how to keep logging miles when the thermometer is being dramatic.

Woman running on a hot summer day

Here are all five rules at a glance — then we’ll dig into each:

Five rules for hot-weather running

Rule #1: Time It Right

This is the big one. Run early morning or after sunset — not high noon. A 6am run and a 1pm run in July are two completely different sports. Dawn is cooler, quieter, and honestly kind of magical. Become a morning runner for the summer; go back to your ways in the fall.

Rule #2: Hydrate Like It’s Your Job

By the time you feel thirsty, you’re already behind.

  • Drink water before you head out, not just during.
  • On runs over 45 minutes, add electrolytes — you’re sweating out more than water.
  • Carry a handheld bottle or plan a route past a fountain.

Rule #3: Dress for the Heat

Ditch the cotton. Light-colored, loose, moisture-wicking fabric reflects heat and moves sweat off your skin. Add a cap or visor and sunglasses, and you’ve built yourself a portable cooling system.

Rule #4: Slow Down (Yes, Really)

Your body works harder in heat, so your usual pace will feel tougher — and that’s normal. Don’t fight it. Slow down, run by effort instead of pace, and drop the ego. A slower summer run still counts. It counts a lot.

Woman jogging on a shaded morning trail

Rule #5: Seek Shade and Softer Routes

Swap the exposed asphalt loop for a shaded, tree-lined trail. Shade can feel 10–15 degrees cooler, and softer ground is kinder to your legs. Bonus: it’s prettier, which makes the miles fly.

Know the Warning Signs — and Stop

This matters. If you feel dizzy, nauseous, get chills, or stop sweating, stop immediately, get to shade, and hydrate. That’s heat exhaustion knocking, and no run is worth ignoring it. Toughness is knowing when to call it.

Keep the Streak Alive

Summer running builds serious mental grit — if the heat doesn’t beat you, fall races won’t either. Run early, hydrate hard, slow down, and respect the heat. Do that, and you’ll come out the other side of August stronger than you started.

Now set that early alarm. Tomorrow’s run is waiting — while it’s still cool.

Keep Reading

This article is for general informational purposes only and is not medical advice. It is not a substitute for professional diagnosis or treatment. Always consult a qualified healthcare provider about your individual situation, especially before making significant changes to your diet or exercise routine.

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