How to become a professional bike racer8/25/2023 ![]() The winning speed of the 1927 Tour spiked up almost 10 percent, and continually increased for the next twelve years. Tour speeds were slower but consistent when racing resumed in 1919, averaging a bit more than 24 kph for the next ten years. The next few were faster, with winning speeds of 28 to 29 kph, while the last four held before WW1 finished with measurably lower average speeds-though faster than the earliest races. The earliest were completed at about 25 kph. The first dozen races (to 1914) produced no trend in the winning speed. Throughout the essay, I refer to them as slopes, lines, rates of increase, and trends interchangeably. The following figure highlights interesting irregularities in that trend.Īll of the lines in the figure above are calculated ordinary least squares estimates (“regression slopes”). He kindly agreed to share his thoughts in the following essay:Įvery cyclist who pays attention to the Tour de France knows that speeds have increased over the 112-year history of the race. ![]() Petrocik, the author of the following piece, sent me a fascinating note summerizing his observations about the increases in the average speeds of the Tour de France over the last century. For the print and Kindle eBook versions, just click on the Amazon link on the right. ![]() Petrocikīill & Carol McGann's book The Story of the Tour de France, Vol 1: 1903 - 1975 is available as an audiobook here. Sign up for our Email Newsletter Bicycle Racing at Increasing Speeds by John R.
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