The final analysis of the week is for Ironman Wisconsin. Wisconsin is a long standing race that draws a large field and as with most events offers 40 age group Kona slots. Flooding in the region impacted the race this year and resulted in some adjustments to the bike course.
Comparing this year’s distributions with those of previous years it’s clear that 2018 trended a little slower and that this is mostly down to a slower bike distribution. Alongside the bike, the swim also trended slower. The overall impact is at the median, with no real difference in times for the top 5% of the field.
The DNF rates for 2018 appear unremarkable – around the averages for the course, perhaps on the higher side for the run. This is bearing in mind that prior to 2017 DNS numbers are mixed into the swim and overall stats.
The medians mostly follow the pattern seen in the distributions. It’s the bike where differences are mostly found, although these aren’t that consistent across age groups. Median bike splits are slower for most male age groups, but it’s more varied among the women.
This is very clearly a North American race with over 90% of the field from the US or Canada. That’s where the Kona slots stay too.
For those towards the front of their age group this year’s finish times often dropped. Those further back didn’t necessarily see such a positive change. There’s a spread in performance with those at the front showing good times for this course and those towards the middle or back trending slower. Enough to impact the median times and shape of the results distribution while seeing the Kona qualification race remain as competitive as usual.
Based on the start list I’ve estimated the Kona slot allocation and from that the automatic qualifying times. As I’ve noted in my other analyses this week I have updated the allocation algorithm as it’s become clear that Ironman have also change theirs. My allocation is close, but doesn’t precisely match Ironman at the moment and may vary slightly for some age groups. Roll down will also impact on final qualification times. You can compare with other races on my Kona qualification page.
Wrapping things up with the top twenty in each age group we have an average set of results here. Times tend to trend around the averages through most of the top twenties. Many of the podium places are faster than average though and even the fastest for the course in some age groups. So a competitive qualifying year when the bulk of the field trended slightly slower.
You can access a spreadsheet of the full results from Ironman Wisconsin 2018 on my Google Drive.