LOL
LOL
I raced a 10k about 10 days ago in similar conditions coming off a winter of only running in temps below 40 degrees. I felt like I was overheating towards the end so I could only imagine running 4 times that distance. I'm sure it felt pretty uncomfortable coming off this winter for most of the midwest/northeast runners.
This is a dewpoint of 54F. That's very ideal. It's just not an issue AT ALL. Find another excuse.
Harambe wrote:
This is a dewpoint of 54F. That's very ideal. It's just not an issue AT ALL. Find another excuse.
Agreed. Here's the actual data. It doesn't get much better. Mostly cloudy and a strong tailwind makes it a fantastic day.
Time / Temp / DP / RH / W Dir / W speed / W gusts / Condition
8:54 AM 63 F 55 F 75 % S 12 mph 0 mph Mostly Cloudy
9:54 AM 67 F 55 F 66 % S 14 mph 0 mph Mostly Cloudy
10:54 AM 69 F 52 F 54 % SW 15 mph 0 mph Mostly Cloudy
11:44 AM 59 F 50 F 72 % W 22 mph 39 mph T-Storm / Windy
11:54 AM 59 F 50 F 72 % W 22 mph 33 mph Light Rain / Windy
12:54 PM 59 F 49 F 69 % W 25 mph 31 mph Mostly Cloudy / Windy
2019
https://www.wunderground.com/history/daily/us/ma/boston/KBOS/date/2019-4-15Historically, all of the fastest years at Boston had tailwinds.
1975
http://www.wunderground.com/history/airport/KBOS/1975/4/21/DailyHistory.html?req_city=NA&req_state=NA&req_statename=NA1983
http://www.wunderground.com/history/airport/KBOS/1983/4/18/DailyHistory.html?req_city=NA&req_state=NA&req_statename=NA1994
http://www.wunderground.com/history/airport/KBOS/1994/4/18/DailyHistory.html?req_city=NA&req_state=NA&req_statename=NA2010
http://www.wunderground.com/history/airport/KBOS/2010/4/19/DailyHistory.html?req_city=NA&req_state=NA&req_statename=NA2011
http://www.wunderground.com/history/airport/KBOS/2011/4/18/DailyHistory.html?req_city=NA&req_state=NA&req_statename=NA2019
https://www.wunderground.com/history/daily/us/ma/boston/KBOS/date/2019-4-15I actually performed better during the sections where there was a headwind to cool things down. You should check your weather reports... wasn't 56 degrees the whole time or probably any of the time for the part I was racing. The humidity did go down eventually... I have a nice sunburn as a result.
After tapering, I was sweating fairly heavily at MP after 4 miles at Boston. No such issues during my 14 miles at MP in the middle of training. I Would have preferred racing into a steady 20 mile headwind, because at least drafting can help you with that.
Course map and wind direction during the mens race. (10am start)
Yep, airport weather. Who would guess that an airport surrounded by a huge body of water would have different conditions than the marathon nearby? The actual conditions in case you were wondering did not match that in the slightest. The winds were never that high from the west, and the humidity only dropped like that when the temperatures got up closer to 70 and the sun came out.
A high relative humidity is meaningless unless you know the dew point and temperature. Below a dew point of 60F humidity is not an issue for humans, regardless of temperature Once the temperature exceeds 60F then the dew point really matters. A temperature of 80F with a dew point of 72F is miserable. If the dewpoint is 52F than it's nice and warm, cool in the shade. I find the best running weather to be about 63F with a dew point below 50F, no wind, sun and big puffy clouds.
Marathon pace starts to go up after 40 degrees.
https://fellrnr.com/wiki/Impact_of_Heat_on_Marathon_Performance
Well the temperatures were above 60 for nearly the whole race. And I'm not convinced that 58 and near 100% humidity is a nonissue for all non acclimated humans.
While I agree with your premise, I find that data not very reliable. For a 3 hr. marathoner, 50 degree weather is certainly not going to add 5 minutes. And 60 degree temperature is not going to add 11 minutes. And certainly the jump from 70 to 80 is not going to be the same than the jump from 40 to 50.
Didn't know the race was at Logan. Might not be representative of the actual race course. The gridded RURTMA might give a better sense of truth, even though it is a mix of short model forecasts modified by an analysis of the observations.
I must enter a name. wrote:
Well the temperatures were above 60 for nearly the whole race. And I'm not convinced that 58 and near 100% humidity is a nonissue for all non acclimated humans.
Please post under one name, Mr McSockpuppet
Why use data from the airport out in Boston Harbor when Weather Underground has thousands of stations? They have several stations right on the course, and many more within a mile of the course.
Route 135 in Ashland, Mile 2:
https://www.wunderground.com/dashboard/pws/KMAASHLA14/table/2019-04-15/2019-04-15/daily
Wellesley College, Mile 12:
https://www.wunderground.com/dashboard/pws/KMAWELLE11/table/2019-04-15/2019-04-15/daily
Boston College, Mile 22:
https://www.wunderground.com/dashboard/pws/KMABOSTO137/table/2019-04-15/2019-04-15/daily
Beacon Street in Brookline, Mile 24:
https://www.wunderground.com/dashboard/pws/KMABROOK5/table/2019-04-15/2019-04-15/daily
Looking at data from those stations yesterday shows the weather was pretty much the same no matter where you were on the course. From 10AM-noon the temp rose slightly from 58 to 60 degrees, then rose to the mid 60's by 1:00 when the sun came out. Dew points were 56-57 throughout the race, and winds were generally S-SW at 4-8mph until about 1:00 when they started becoming more gusty and variable.
Not terrible conditions, but it was pretty muggy and the slight tailwind didn't give much of a boost but did make it it feel even more humid.
Ok. You might be right when it comes to running but it is in fact a general rule that people are not bothered by dew points lower than 60F. Cool air simply can not hold enough water. At 80F the air can hold 5 times as much water as when it is 50F! That why a relative humidity of 72% is absolutely miserable at 80F but a relative humidity of 40% at 80F is delightful. People start feeling humidity in the lower 60'sF dew point. What a 98% relative humidity means at any temperature though is that there probably is or was precipitation around.
The runners were all drenched in sweat and I saw a lot of bloody nipples. Clearly the humidity mattered.
muggy roads wrote:
Why use data from the airport out in Boston Harbor when Weather Underground has thousands of stations? They have several stations right on the course, and many more within a mile of the course..
Do you think i didn't try that? Me? Every station I tried (except Woostah) kept redirecting me to Logan when I narrowed the search to historical data. Perhaps I need to clear cookies or something?
Thanks for covering for me.
It was my first Boston and I spent the last five months training in Michigan in temps generally below freezing and in the dark. I found it very warm and my body was not ready for it. I hit the Newton hills just as the sun came out and overheated, along with many other runners.
If I ran in those conditions in September after a summer of training I would probably have done better but it was pretty rough. Almost all runners I spoke with afterwards agreed, although they were also from cold climates.
Thanks Muggy. That is the data I've been searching for, for the last 24 hours. How were you able to get it? I had the same problem with redirecting to Logan.
Sunburned Sammy wrote:
It was my first Boston and I spent the last five months training in Michigan in temps generally below freezing and in the dark. I found it very warm and my body was not ready for it. I hit the Newton hills just as the sun came out and overheated, along with many other runners.
If I ran in those conditions in September after a summer of training I would probably have done better but it was pretty rough. Almost all runners I spoke with afterwards agreed, although they were also from cold climates.
LOL