Had an interesting conversation yesterday. While my wife was buying a pair of running, I started talking to a store employee. He appeared to be a runner, so I asked if that was the case. He replied yes and then I asked him his thoughts on the GPS units this store was selling. He said he finds them to measure a course long in most cases. I asked him if understood why. His response was shocking as he stated he knows that courses he runs that are USATF Certified have a built in safety factor of .1%. I stated other factors that cause them to measure long and he agreed.
After further conversation, I found he was no ordinary runner as he ran the Olympic Marathon trials in Houston as a sub 2:19 marathoner. I wonder if elite athletes like this young man know about the SCPF.
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