By Coach Adolfo Salgueiro

Since the majority of my readers and trainees are in the Northern Hemisphere and the weather is warming up rapidly despite being three weeks away from the Summer Solstice, the time has come to remind all athletes that running during the hottest times of the year requires purposeful and intentional adjustments. These modifications are not optional. If you don’t alter your habits, you will not only be unable to maintain or increase your fitness, but you could get seriously hurt.

Heat related injuries won’t break your bones, but they could have lasting effects on your body, and thus, on the future of running.

So, here are 5 tips to adjust to summer running.

1 – Understand what is happening – There are two basic things that happen when you run in a hot and/or humid environment. They just are, so there is no use in fighting them.

1A – The first one is basic physics: Humid air is denser than dry air, so it takes more effort to displace a heavier mass of air, thus enhancing the effort it takes to run at the same speed.

1B – The second one is basic biology: The human body cools off by sweating and the blood contains about 92% water. The more you sweat without replenishing fluids, the more water gets sucked out of your bloodstream and the ticker blood becomes, making it more difficult to circulate. That alone, spells deep trouble.

Summer Running

If you can’t adjust the time of your tun, you may end up on the dreaded treadmill (Julia Larson, Pexels)

2 – Adjust the time of your running – If you live in places like Florida, Texas or similar, your two options are adjusting to run in the heat/humidity or not running at all. If you want to continue running, you must do it at the coolest time possible, when it is gentler to the body. Before sunrise or after sunset are the basic choices. Wake up earlier or wait until later. If you can’t then the dreaded treadmill seems like your option, but that comes with its own set of particularities that you will have to deal with.

A good hack is to keep your running shirt and hat in the freezer and put them on right before you hit the road. This will cool off your core and provide you with a few comfortable initial miles before the inevitable sets in.

3 – Slow your race – There is a reason most mainstream races take place in the fall or the spring. Who wants their goal race in the thick of the scorching summer? So, since summer is usually the time to get ready for the upcoming season, it is the perfect time to take care of the feared strength training and to build up your aerobic engine, which is done by running slower than usual. Your fall and spring PRs are built during the summer. Take advantage of it. Don’t worry about what the fast people in your running group may say or what your Instagram followers may think.

Summer Running


Hydration during the summer months is key, but overhydration can be a life threatening condition (Ketut Subiyanto, Pexels)

4 – Careful about overhydration: Hydration is key during the summer, but hydration is not only what you consume as you run. Hydration should be a 24/7 habit that will put you as close to fully hydrated when you start your GPS watch. Your body is designed to lose fluids and run without replenishing every single drop of water you lose. Don’t fall into the temptation of overindulging on water or sports drinks or you could experience hyponatremia, a condition in which the sodium levels are so diluted that it could cause seizures, coma and even death. For more on hyponatremia, I invite you to read what the Cleveland Clinic website has to say about this serious condition.

5 – Beware of the signs – Running during the summer has challenges that go beyond having to run earlier, later or slower. Heat exhaustion and heat stroke are two of the most serious perils from running in inhospitable climates. It is important to know and recognize the symptoms of each one, so you can adjust properly and avoid a mishap that with luck, it will only keep you out for a few weeks, without it, it could kill you. I wrote an earlier post on heat exhaustion vs. heat stroke. I invite you to revisit it by clicking here.

Running in the heat and humidity is no joke. Please be careful out there. Never lose sight that you need to live to run another day. The line between toughness and doing something stupid is very thin and if you cross it, you can get seriously hurt.

There are no medals or podiums during training, so, be smart out there and remember you are only getting ready for next season.

Skip to content