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How hard is the 2023 Giro d'Italia?



I'm posting this well into the 2023 edition, and an interesting twist for this year has been the pace at which riders are retiring, whether as a result of crashes, health (COVID or otherwise) or the brutal weather.


Consistent with my approach last year, I'm making the data I collect available to download for you to use for your data experiments - I've love to hear what you've done with it.


Below is the first instalment of charts for 2023 - as always you can mouse over each of the elements of the charts for more information. If you'd like to compare this year's route to last year you can find the analysis of 2022 here, and 2021 here. There will be more to come...



A comparison of attrition rates

This chart compares the number of riders that have either not finished or not started each stage for each of the last five editions of the Giro.


The biggest single retirement day in the last five years was stage 10 of the 2020 edition, where 16 riders retired; Mitchelton-Scott and Team Jumbo-Visma retired their entire squads. We haven't seen two consecutive days of more than 10 retirements over this five year period.


If we were to draw an average attrition line for the last four years, and adjusting that s10 result in 2020 for something less dramatic, that average line is very close to the result for 2019 - I've included that line in the chart below.


I'll keep tracking retirements for further points of interest.




A comparison of distance and climbing

This chart compares the climbing metres of each stage with the distance travelled. The size of the circle is a ratio of vertical over distance to reflect average metres climbed per kilometre (larger circles being 'steeper').



Comparing to prior Grand Tours

This year's Giro has the most climbing of the last three years.



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