By the Numbers: How Hot is Too Hot?

By AFM – September 21, 2011

With Austin’s multi-month streak of 100+ degree days, and with marathon training in full swing, you may wonder how hot is too hot to run? Or walk. Or cook an egg. We decided to let the numbers tell the story.

1

Number of Texans who finished the Death Valley Badwater Ultramarathon

135-mile run in 2010

118

High temperature at the July 2011 Badwater Ultramarathon

10,000

Number of runners who did not show at the start of the 2007 Chicago Marathon, the year it was cancelled midway due to excessive heat

88

Temperature of the 2007 Chicago marathon that was cancelled due to heat

21

Pounds of ice per person used during the May 2011 Memorial Hermann Ironman Texas for the 2,160 triathletes participating

308,000

Number of visitors to Barton Springs in June and July of 2011

350,000

Total number of visitors to Barton Springs June, July, and August of 2009

1440

Gallons of water put into coolers by RunTex at the Lady Bird Lake Trail under the S. First Street and Mopac bridges

16,000

Cups of water consumed from the coolers on a summer day

106

Core body temperature worrisome for heat stroke

145

Possible high temperature of hot pavement on a 108 degree day

155

Degrees of heat needed to cook an egg

123

Internal temperature of a closed car after 60 minutes on an 80-degree day

11

Number of workout days needed to acclimate to heat

3

Body-weight pounds the average runner loses in conditions of 85 degrees and 40 percent humidity

1700

Hottest time of the day in Austin (military time)

Sources: badwater.com/info; abclocal.com digital weather; thewoodlandscvb.com; Austin American-Statesman; keepaustinbeautiful.org; RunTex; homeenergyweb.com; Austin American-Statesman; National Weather Service; timeanddate.com; Journal of Physiology (1993). 460. pp. 467-485 467; from tests conducted by the Gatorade Sports Science Institute reported in Runner’s World, August 2004.

 

 
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