Last weekend gave us runners a preview of brutal summer weather in South Florida. It wasn’t as bad as mid-July, but in mid-May, it signaled what’s ahead. If you live in the Northern Hemisphere, expect this soon.
Hydrate, sure, but don’t overhydrate (Image by Grok)
The line between toughness and doing something stupid is very thin, and if you cross it, you can get seriously hurt. So, my yearly blog post urging runners to stay on top of their training during the summer has been forced to be published earlier than expected.
Adjust your training and expectations for survival, not just performance. Heat injuries can permanently impact your health and your running future.
Here are five adjustments for safe training during the summer.
1 – Know what’s happening – You can’t fight the weather; you can only adjust for safe running. Two basic things occur:
1A – When air turns humid, it feels thicker, making each run more effortful. Running at the same speed takes more work.
1B – The second one is basic biology: The human body cools off by sweating, and the blood is about 92% water. The more you sweat without replenishing fluids, the more water gets sucked out of your bloodstream, and the thicker the blood becomes, the more difficult it is to circulate. This spells deep trouble.
2 – Adjust your running time – If the brutal summer is an unavoidable part of your home zip code, your options for outdoor running are reduced to: A- adjusting to run in the heat/humidity, or B- not running at all. If you choose A, you must do so at the coolest time possible, when it is gentler to the body. The basic choices are before sunrise or after sunset. Wake up earlier or wait until later. If you can’t, there is always a frightening Option C: The dreaded treadmill.
A good hack is to keep a running shirt and hat in the freezer and put them on right before you hit the road. This will cool your core and provide you with a few comfortable initial miles before the inevitable sets in.
3 – Slow your pace – Do you know why mainstream races take place in the fall or the spring? Who wants their goal race in the thick of a scorching summer? This is the time to get ready for the upcoming season; the time to tackle strength training and base building. The latter is achieved by running at a lower effort level, regardless of speed. Your fall and spring PRs are built during the summer. Don’t worry about what “the fast” people may think. Stop posting on Instagram if your followers’ opinions matter.
4 – Overhydration is a real danger – Your body is designed to lose fluids as you run, without replenishing every single drop of sweat. So, don’t fall into the temptation of overindulging in water or sports drinks. Hyponatremia is a serious condition that happens when too much fluid is ingested, diluting your sodium levels to the point that it may cause seizures, coma, and even death.
Hydration is not just about what you consume while running. Hydration is a 24/7 habit that has you ready to go by the time you press start in your GPS watch.
5 – Beware of the signs – The challenges of summer running go beyond training earlier, later, or slower. Heat exhaustion and heat stroke are among the most serious dangers in inhospitable climates. It’s each runner’s responsibility to recognize the symptoms and adjust before it becomes a 911 call. With luck, a mishap may keep you out for a few weeks; without it, it could kill you. In a previous post, I wrote about heat exhaustion and heat stroke. I invite you to revisit it by clicking here.
In Conclusion
There are no medals or podiums during training. Be smart and remember you are only getting ready for next season.
Running in heat and humidity is doable if you prepare properly. Never lose sight of the fact that you need to live to run another day. As stated earlier, the line between toughness and doing something stupid is very thin, and if you cross it, you may get seriously hurt.
👇Do you want the key takeaways of this blog post? 👇 👇Click below to watch the video summary 👇
It took me a while to understand it, but with maturity, I finally did. Training consists of two separate and different elements: Work and recovery. They are equally important, and they complement each other. Their symbiosis confirms the Aristotelian saying that the whole is more than the sum of the parts.
Recently, I heard that the second element is labeled as The Invisible Training.
It got me thinking about a classic Emil Zatopek quote where he states: “What you do when the stadium is full is important, but what you do when the stadium is empty is a thousand times more important.”
For us amateur weekend warriors, a standing ovation at an Olympic stadium is no more than a pleasant dream. Yet, well into the XXI Century, each one of us has the equivalent of our own Olympic stadium, and we have become addicted to that standing ovation of kudos Strava, followers on Facebook, and likes on Instagram. These may be cool for many, but they won’t get you any better.
As Zatopek (a 4-time Olympic gold medalist and multi-world record breaker) said, that is not the key to success. It is what we do outside the limelight that counts. A thousand times more.
► It is the strength training that will help you get stronger, more resilient, have a better form, and make you injury resistant.
► it is the physical therapy you do to take care of your bones, muscles, and soft tissues. Not just face-to-face with a professional, but as a prehab to avoid a recurring injury.
► It is your daily nutrition that allows your body enough of the good stuff to repair itself and be appropriately fueled for your activity.
► It is the hydration throughout the day that will allow you to sustain a hard run even in the harshest of weather conditions.
► It is the scheduled recovery for your body to adapt to the stress we have put it through and accepting that sometimes it will require more time.
► It is understanding that sleep is the champion of recovery tools in your arsenal and that lack of sleep is not a badge of honor.
► It is accumulating knowledge about the sport and the function of your body, which will allow you to understand what’s happening and why.
► It is the evaluation of your training, especially when you have bonked or screwed up, and accepting it as an opportunity to learn and build experience.
► It is living a balanced life, one where your job, your family, and your friends won’t be neglected, and end up resenting you and your running.
► It is allowing yourself to have fun outside your running life. Keeping it all in perspective and always remembering why you are doing this.
These are just ten of hundreds of parameters of what is encompassed within the realm of invisible training.
In summary, everything you do while you are not running is equally essential to the running time.
Yes, it all sounds intuitive, simple, even obvious. But we’ve all fallen into the trap of only accepting hard work as worthwhile training. And to many, an injury has taught us how wrong we were. My wish is that this brief writing will help avoid the injury part for you, dear reader.
Share your thoughts in the box below so other runners may benefit from your experience.
No sugar coating it: Running in the heat and humidity of the summer sucks. It does. However, if we want to remain active during these challenging summer months of running and have any chance of having a solid racing season come fall, we must continue training. And to make hot weather running enjoyable and safe, the only way is by making substantial adjustments.
I’ve shared summer running tips every year since I began blogging, but this time I decided to do something different. I have gone through my previous writings on the issue and consolidated the tips. These, plus a handful of new ones I’ve added, bring the final count of summer running tips to 39.
To be clear, nobody expects you to apply all 39 of these hot weather running tips on every run. These are just guidelines and suggestions with very short explanations to get your thoughts started. I have included links to posts where I have explored the issues in more depth. And if you’re looking for more background or science behind these summer running safety tips, a quick Google search will point you in the right direction.
So, without further ado, here they are:
1 – Listen to your body – If you feel dizzy, nauseated, or overheated, don’t hesitate to stop, cut the run short, seek shade, ask for help, or just call it a day.
2 – Recognize heat stroke symptoms – Know the difference between exhaustion and heat stroke and familiarize yourself with warning signs like confusion, rapid pulse, or clammy skin.
3 – Hydrate all day – Hydration should be a 24/7 habit that keeps you close to fully hydrated by the time you start your GPS watch.
4 –Don’t overhydrate– Overindulging in water or sports drinks can cause hyponatremia, a condition in which diluted sodium levels may lead to seizures, coma, or worse.
5 – Use electrolytes– Supplementing with sodium, potassium, and magnesium helps your body retain and use the fluids you’re drinking more effectively.
6 – Run early or late – Run before sunrise or after sunset to avoid the most extreme heat and protect your body from overexertion.
7 – Monitor the heat index– Skip your outdoor workout if it’s over 98°F with more than 70–80% humidity, as your risk of overheating skyrockets.
8 – Slow down your pace – Running in the heat is harder, so let go of your pace goals and focus on effort instead of speed.
9 – Accept higher perceived effort – A rise in core temperature, not lactate or heart rate, becomes the main fatigue limiter in hot conditions.
10 – Use effort and time, not pace – In summer, pace and heart rate can be unreliable, so go by effort and run by minutes instead of distance.
11 – Recognize the signs of dehydration – Watch for fatigue, brain fog, darker urine, dizziness, or a dry mouth—these may all signal fluid imbalance.
12 – Prehydrate before long runs – Do not cram your hydration; it doesn’t work that way. Hydrate throughout the day and days, not just before your run.
13 – Rehydrate after running – After a sweaty session, replace fluids with water or an electrolyte drink. Not only as soon as you’re done but throughout the day.
14 – Dress light and bright – Light-colored, loose, and moisture-wicking clothing helps reflect sunlight and allow sweat to evaporate more easily.
15 – Train in the shade – Routes with trees or buildings that block direct sun can be 10–15°F cooler and far more comfortable, and safer.
16 – Freeze your gear – Put your shirt and hat in the freezer before a run to delay overheating and make the first few miles more tolerable.
17 – Take short breaks – Stop for 1–3 minutes during a hot run to drink, throw water on your head, or reset your effort perception.
18 – Use water for recovery – Jumping into a pool, cold bath, or even running through sprinklers post-run can drop your core temp and revive you.
19 – Know where the water is – If you don’t know where the reliable water sources are, run with a handheld bottle or hydration pack.
20 – Run indoors if needed – If conditions are extreme, choose a treadmill or indoor track to get your miles without the heat risk.
21 – Build heat tolerance gradually – It takes a few weeks to acclimate, so ease into hot-weather running instead of diving into hard efforts.
22 – Move workouts around when necessary – Move long or intense workouts to cooler days and use weather apps to plan smarter each week.
23 – Use a heart rate monitor – Heat elevates heart rate, so monitor it to avoid overexertion while running.
24 – Expect it to suck – The first few weeks of heat running will feel awful, but your body will adjust and it will suck less. Proceed with caution.
25 – Adjust your training plan – In very hot climates, push harder workouts like long tempos to the fall and focus on base-building instead.
26 – Exploit cooler days – When temperatures drop, use the opportunity for a strong tempo or threshold session to boost confidence.
27 – Don’t obsess over metrics – During summer training, forget about pace, Strava comparisons, or even distance—survival and consistency are the priority.
28 – Take advantage of trails – Shaded trails provide natural cooling, softer surfaces, and often more enjoyable running when it’s hot out.
29 – Eat hydrating foods – Boost your fluid intake by eating fruits and veggies like watermelon, cucumber, and oranges, which are 80–90% water.
30 – Beware of diuretics – Limit high doses of caffeine or alcohol around runs, as they increase urination and risk of dehydration.
Learn how to gauge your level of exhaustion (Photo: Tima Miroshnichenko, Pexels)
31 – Set hydration reminders – Pair water intake with daily habits like brushing your teeth, meals, or use phone alerts to stay on track.
32 – Sip, don’t guzzle – Drink water steadily throughout the day and during your run to avoid bloating and improve absorption.
33 – Internalize year-round hydration strategies – Treat hydration like a year-round discipline, not just something to focus on when it’s hot.
34 – Know your sweat rate – If you’re a heavy sweater, you may need more fluids and sodium than the average runner.
35 – Pair hydration with daily habits – Combine drinking water with routines like meals, workouts, or bedtime to form easy-to-remember habits.
36 – Double instead of going long – On non-long run days, two shorter sessions may be safer than a longer push under the brutal heat. Consider it if needed.
37 – Use treadmill for quality work – Use a treadmill to maintain pace accuracy or intensity when outdoor heat makes it unsafe.
38 – Keep someone informed – Always tell a friend or loved one your planned route and expected return time, or use live tracking apps.
39 – Know the line between tough and dumb – Being smart and cautious during summer training keeps you healthy and able to run tomorrow.
Did I miss anything, or would you like to contribute to the list? Please do so in the comment box below.
With Summer around the corner, maybe already here if you are reading this a few days after publication, it\’s essential to adjust your running routines to ensure a safe and effective experience. Running in hot weather requires intentional modifications to prevent dehydration, heat-related injuries, and negative impact on your fitness. These are 12 quick tips for summer running.
1 – Slow Down: Running in the heat is physically demanding, and your body requires more effort to maintain the same pace. Embrace the reality of running at a slower pace to accommodate the increased effort it requires. It\’s about maintaining the level of perceived effort rather than focusing on speed. It doesn’t matter if it screws your Strava averages.
Running safely during the summer is perfectly possible, but it requires planning (Photo: Pexels)
2 – Plan Your Hydration: Proper hydration is crucial during summer runs. Plan your routes around areas with ample fluid sources or strategically seed water along your route in advance. Remember to consume water at scheduled intervals, before you feel thirsty, which may indicate dehydration has already set in.
3 – Overhydration is a Thing: While staying hydrated is important, be cautious about overdoing your water intake. Drinking in excess can lead to hyponatremia, a potentially life-threatening condition caused by dilution of sodium levels in the blood. Stay hydrated throughout the day, not just while you run, and ensure your urine is lightly colored as a sign of healthy hydration.
6 – Dress Appropriately: Opt for light-colored clothing, which reflects more light and deflects heat. Avoid wearing long sleeves, long pants, or outfits designed to induce excessive sweating, as these can hinder your body\’s ability to cool down.
7 – Freeze Your Running Clothes: Sounds weird, but if you place your running shirt and hat in the freezer and you put them on just before you leave home, your body will cool down, and delay the inevitable. Sure, it will get hot anyway, but isn’t it better for it to start at mile 2 or 3 than at the first step?
8 – Stay Connected: Carry your mobile phone during runs. Inform somebody of your whereabouts and expected return time. Consider using apps or services that allow loved ones to track your real-time location for added safety.
Click this image to see the correlation between relative humidity and temperature
9 – Factor in Humidity: If you train in a high-humidity region, be aware that running in saturated air requires more effort compared to drier conditions. Adjust your expectations and accept that maintaining the pace may require additional effort, so you may have to run shorter. Mental preparation and acknowledging this difference may help you stay motivated.
10 – Adjust Your Training Schedule: Be flexible with your schedule, especially if you\’re preparing for a fall marathon. Should the weather conditions be extreme, consider rescheduling long runs or intense sessions to a more suitable time of day. Avoid pushing too hard in unfavorable conditions to prevent extreme exhaustion and/or injuries.
11 – Choose Shaded Routes: Plan your routes intelligently by selecting paths that offer ample shade. This will help shield you from direct sunlight and reduce heat exposure, making your runs more comfortable and safer.
12 – Listen to Your Body: Don\’t be a hero. If you feel dizzy, fatigued, or overheated, don\’t hesitate to stop, cut the run short, seek shade, ask for assistance, or just call it a day. Prioritize your safety and well-being, as taking these precautions will aid in faster recovery and enable you to resume running sooner.
13 – Differentiate Exhaustion from Heat Stroke: It\’s crucial to distinguish between normal exhaustion due to heat and a potentially life-threatening heat stroke. Familiarize yourself with the symptoms of heat stroke to avoid any severe consequences. Refer to the graphic below, borrowed from www.weather.org, for a comprehensive understanding of heat stroke symptoms.
Learning this information could save your life
Running during the summer months is possible with the right adjustments and precautions. Many of the world’s greatest marathons, such as Berlin, New York and Chicago, take place in the fall, which means you must train during summer. By planning ahead, making smart choices, and prioritizing safety, you may continue training effectively and ensuring a smooth transition into the upcoming racing season.
Always err on the side of caution and enjoy running while staying safe.
When I started running marathons back in the early 1980s, the only fueling strategy available to most weekend warriors was to drink enough water so you wouldn’t dehydrate. Yes, I know. This is not a fueling strategy. But consuming calories during a race was not a thing back then. The most calories I consumed during a marathon were when a friend handed me oranges al mile 15 or my girlfriend waited with a sugary lemonade around Mile 21. No wonder I hit the wall every time.
Carbohydrates with a bit of protein is still the pre race day preferred meal (Photo: Engyn Akyurt, Pexels)
But both science and the running consumer goods industry have developed exponentially in the last 4 decades. Not only do we know that the average body doesn’t have enough resources (beyond fat if you have trained to properly tap into it) to last you 26.2 miles, but we also have dozens of products to assist us on which calories should be consumed and when.
Despite the average body having enough fat stored to run over 1000 miles, and the first known 100-miler without fueling was recorded just a few months ago, most runners are not trained to run on fat as their prime fuel source. So, we depend on glycogen, of which we have a finite amount, around 2000 calories, which is needed to fuel everything, not just your running muscles, so it is insufficient to last a marathon.
When it comes to fueling, it is not just about the gels you will consume in your race. There are four distinctive phases you need to address. From the list below, the “During Race” segment is not intended for 5K or 10k efforts, as an average well-nourished and well hydrated body should have plenty of resources for those distances. While most intermediate and advanced runners should be able to complete a half marathon with no additional fuel, it isn’t required, either. But when you go for a marathon or an ultra, you must fuel the body, so your tank won’t deplete, and you won’t hit the wall. And yes, it is like hitting aa actual wall.
DAY BEFORE RACE – By this time you should know what works and what doesn’t work for you. As healthy as a big bowl of salad may be, consuming all that fiber right before a race may not be a clever idea. Complex carbs and protein are usually what work best. Fatty foods should be avoided, same as simple carbs. The carbs in a bag of Doritos will be burned way before you need them at the race and are crap. It is obvious that your pre-race fueling strategy is not just a dinner thing, but a full day affair if not a full week one. Also, please, you need to dine at a time that will allow enough time to digest it. Last thing you want is compromising your digestion within hours of the starting gun.
PRE-RACE – Your body consumes glycogen and other resources just by being alive. The brain, the liver, the beating heart, etc. need energy to perform their duties. So, to get to the starting line with your tank topped off you need to replenish whatever was consumed during the night, if you have a morning race, or during the day for an afternoon affair. You can certainly run short races in a fasting state, but when it comes to a half and beyond, why would you start with your tank at 70-75% when you can do so at 98 or 99%? Carbohydrates and a touch of protein is the way to go. And, as usual, this must be perfected during training. Don’t wait until race morning to try it out.
Chocolate milk is the post-race refueling product by excellence. This is my favorite brand.
DURING RACE – Fueling strategy is as personal as your choice in running shoes. It is what works for you, not for your friend. Your fueling strategy on race day is the execution of the plan you’ve already perfected during training. So, apply it! Mile 20 is not the time to figure out a caffeinated gel will send you to the port-a-potty, or that you can’t stomach a 5th serving. Fueling also includes replenishing electrolytes either though a product you already know, trust and you carry yourself, or through whatever your race is serving. Personally, I don’t advise relying on the availability of Gatorade in a race. After you’ve invested so much time, money, emotion and effort on your race, better carry what you’ll need and know works for you.
AFTER RACE – Once your race is over, it is time to splurge, sure, but don’t rehydrate with alcohol and junk food. That comes later. Both carbs and protein need to be consumed as soon as possible to replenish and start the muscle repair process right away. Chocolate milk is the recovery drink for excellence. This is the day to go crazy. Have all the extra beer you want, that fatty burger you passed on during training or go for the entire pizza instead of just a couple of slices. But please do so after you’ve taken care of your initial post-race care recovery.
![\"\"](\"https://images.squarespace-cdn.com/content/v1/5c2e49f525bf02ce9657df92/7f7e168e-ed2e-4527-851c-5c44b341a05c/Man.png\")
