I have lived in Houston, North Carolina, and S Florida... Not sure I'd ever say 90+ with dew point around 70 is fine :D But... yeah, you acclimate, you slow down, you hydrate, you survive. Love it when I end up in a dry place where it's like 85F and 15-20% humidity... so amazing.
fastboy77 wrote:
Not sure. But I recall doing a 4 mile tempo run in 20 min a few years back. In 95 degree heat. Heat doesn't phase me.
Heat hardly fazes me either. Just run slow and drink a lot.
If it to hot don’t run . If it’s not run.
My club has two runners who did the Death Valley festival of races (run in the middle of the day in summer.) One I talked to said he drank a gallon of water an hour.
That wins. I cannot think of many hotter places than Death Valley in the middle of the day in summer!
120 degrees F. Officially the hottest place on Earth (134 degrees).
Bad Wigins wrote:
Guess it's that time of year again where people start saying "hot and humid." If your temps are in the 90s, trust me it is not humid. Might get humid in the evening when it cools off though. Maybe if you're in the Arabian desert where the high is 120F it will be humid at 95 later.The real issue is that it's close to body temperature, which dramatically increases how much you have to sweat to avoid overheating. Even after you are acclimated, and have tek shirts and etc, there's an absolute limit to how fast sweat can cool you. Even if you're fully hydrated! Then you can only slow your runs down and generate less heat.
All those people who prefer to go swimming in the summer have a point. They are the smart ones. That includes the Arabians.
I know some "hot n' humid" dope will start coping at me, so here is the 10 day forecast for the Arabian capital of Riyadh. Currently it's 94F and forecast to hit 106 later. The lows will be in the low 80s and this will continue all week. At no point is the humidity forecast to reach even 30%. Hot is dry.
so asinine.
because one city in the world has high temps with low humidity, you extrapolate that for the entire world. There's a difference between dry AZ heat, and muggy South Florida heat.
I wonder how one individual can possibly be wrong about virtually everything.
Cross Country Runner wrote:
120 degrees F. Officially the hottest place on Earth (134 degrees).
I agree but it wasn't on that day (was it?).
The most humid and uncomfortable I have ever been was in South Korea during monsoon season. It rarely got above 90 but between the humidity and air pollution I was hurtin.
Alan
Today was about 82 degrees, 79 dew point when I ran. I ran a pretty good two mile LT run. Didn't want to linger out there. I felt really good because my weight was up a few pounds and I was fully hydrated before the run.
I've found that time of day and level of direct sunlight matters more than temp in central valley CA. E.g. 80 and rising in the early afternoon is way worse than 90 and falling after 6 PM.
temp not important wrote:
I've found that time of day and level of direct sunlight matters more than temp in central valley CA. E.g. 80 and rising in the early afternoon is way worse than 90 and falling after 6 PM.
You're right. Good for you.
I think it depends quite heavily on your health as well.
In the past I was fine, 40C no problem.
Now I think I'd struggle and it could be dangerous.
My neighbour was grey when he came back from a run the other day (we had a heatwave plus it was extremely sudden).
Good point. Delayed heatstroke is v dangerous. And once the thermal runaway begins it's very hard to reverse, much better not to enter that zone. Athletes training in hot climates should educate themselves with a heatstroke primer so they recognize early signs. "Toughing it out" is the worst idea ever.
Nice 2-year bump. Too hot to run? LOL. Never! Running is the GOAT. Toughen up people.
When I was much younger, I could tolerate 90 F, and even into 100 F. In fact, I thrived high temperatures. I just had to put on sun screen and wear a headband (to keep the sweat from burning my eyes).
Now that I am older, low 80s F is my limit, and I will probably top out at 5 miles in that temperature.
The low country of SC is horrible! Dew points in the mid to high 70s. I will never return.
Imo this question needs more context. For easy running? For tempo runs? For workouts? Races? And for how many miles?
As people have mentioned, lots of variables and "running" can mean a wide variety of exertion levels and duration.
However, what I will add is that in my experience wind direction is an overlooked factor in overheating. One of the worst runs I can recall heat-wise was far from the hottest in absolute terms (both heat and humidity), but it was an early summer day with high humidity and temperatures in the mid-80s. I ran an out-and-back, with the first 4 miles into a slight headwind. No problem at all in the first four miles. However, on the way back it felt like I was running in dead air, and each mile felt more draining than the entire first half. I stopped to rest in the shade twice on the way back, which is probably the thing that protected me from prolonged negative effects.
I have gone for a 5 mile run in 100 degree weather and humid conditions, and I think only the hottest of those days (maybe 103?) rivaled the un-acclimated death march with a tailwind in mid-80s.
i ran in langkawi on holiday recently. super humid and hot - 36 degrees celsius. many of the local muslims were running in track pants and long sleeves in that weather. i don't know how they did it.