Ironman Brazil 2025: Age Group Stats and Qualification Times
We might just have seen the fastest weekend of Ironman racing of the year because Brazil matched Hamburg for speed. I’m less familiar with the Brazilian race but clearly course and conditions are favourable for fast times.
Result Distributions
The most striking aspect of the race distributions is how clearly skewed towards the left these charts are. The amalgamated results from previous years fill out a bit more, but retain a skew towards faster times. Not as extreme as Kona, but still a clear indicator of a fast race. This year’s event looks to have trended slower in the swim, faster in the bike and about the same for the run. Overall the race falls inline with recent years at the event.
DNF Rates
A particularly low DNF rate at this year’s event suggests favourable conditions. We have a good field size here and the vast majority completed the race.
Median Splits
This is always a tricky part of the analysis. Not because the medians represent anything complicated but they don’t tend to reveal anything new about the event. Patterns follow those shown in the distributions with some individual variance between age groups.
Competitor Origins
The majority of athletes are Brazilian with a relatively small percentage coming from topside of South America. Based slot allocations the slots mostly stayed in South America too.
Performance Changes
Broadly the results in Brazil have been quite stable in recent years. In the larger age group,s where times tend to hold more consistently, the only notable change was 2011 – a significantly slower year. In female age groups which are much smaller there’s a lot more variance further back in each division.
Qualification
Based on the start numbers in Brazil I’ve calculated the slot allocation for the race. From that we can then determine the final qualifying time before roll downs come into play. There’ll be at least one roll down here as M75-79 had no finishers. You can adjust slot numberesds and see the impact on finishing times on the Ironman Brazil qualification page.
Age Group Top 20
For clarity I’ve limited the top 20 charts to the last 4 years of racing. This also helps highlight how this year’s race is definitely quick,. but perhaps not that different to recent years. I’ll note that in quite a few age groups we see a very strong pick up in speed in the top 3-5 athletes. Lines take a step turn leading to very fast times. Brazil seems to attract a very competitive front of pack.
Conclusion
Ironman Brazil 2025 was a fast race but this is normal for the course. More notable is the clear skew shown in its results, there’s less weight in the back of pack than many other events. Fast courses can certainly produce this skew and the low DNF rates suggest the course is quick. It may also reflect a strength at the front of the field which we saw with the pick up in speed of podium age groupers.