asdfgh wrote:
eotbs wrote:So...the marathon...in Rio de Janeiro. IT WILL BE HOT AS F***, AND HUMID AS F***.
Really? Do you realize it is winter in Rio in August? The average high temperature in Rio in August is 76 degrees Fahrenheit. The schedule I see shows the marathon starting at 9:30 in the morning, when it should be cooler than that. While it certainly won't be Berlin type conditions, it will very likely be cooler than the 2008 Olympic marathon was.
The temperature fluctuates so little, year-round, in Rio, that it's almost meaningless to mention that it's technically winter there.
That aside, the data I'm looking at shows daily high in August as 77.7 F, daily low as 66 F. So it'll probably be around 72 at 9:30 am, and 75-76 at the finish. 76 is not terribly hot outright, but it will NOT be a race-condition that these guys are used to. All over the LRC boards, it's constantly said that the ideal temperature for marathoning is much lower (in the 40's, F). Some argue a bit higher, but no one is saying that it's anywhere near 76 F.
On top of that, how hot something feels is VERY different from the actual temperature. THIS IS WHY I MADE SURE TO TALK ABOUT TEMPERATURE AND HUMIDITY CONCURRENTLY IN MY POST. The average relative humidity in Rio in August is 77%. That, along with a temperature of 72-76 will feel like mid-80's or greater, and have worse effects. ...and then, on top of all that, there will likely be full sun...which will make it feel even hotter.
When comparing this to Beijing, here are the numbers I have:
2015 Beijing WC Marathon: Aug. 22nd, 2015: low of 69 F, high of 91 F, averate humidity of 59%, competition started at 7:35am locally
2008 Beijing Oly. Marathon: Aug. 24th, 2015: low of 69 F, high of 90 F, average humidty of 62%, competition started at 7:30am locally
For reference:
2004 Athens Oly. Marathon, Men's: 80 F at start, 40% relative humidity at start, race begun at 6pm locally
2004 Athens Oly. Marathon, Women's: 86 F at start, 50% relative humidity at start, race begun at 6pm locally
So, although there have been a bit hotter temperatures, none of those marathons have had an expected humidity of 77%. It'll feel way hotter and more oppressive than any of the historic marathon conditions listed above, and nothing you posted concretely proves otherwise.