Our Data Expert Crunched 10 Years of Age-Group Finish Times. Here’s What He Learned.
April 22, 2026
In the 2025 analysis of the fastest and slowest races of the year, we found that the average finishing times varied by two hours between the fastest and slowest races of the year, showing just how much impact the course and its conditions can have on your finishing times.
only tells you so much. Maybe the weather offered the perfect conditions, or the course had to be altered due to construction or other interruptions.
To guide you in your PR quest, I’ve taken a look at the last 10 years of Ironman results to find the events that most consistently produce fast age-group times. triathlete
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