A brief intro to Ironman data set

I will be adding more details soon but for now this is a quick intro to my research dataset. 
Great! Certainly a biased population (people who have done at least 10 Ironman triathlons), so it would be interesting to see how this translates to a new Ironman triathlete. Thinking way ahead, here are some other things to consider including in your model:

* how much Ironman race experience they have at the time of a particular race
* how much non-Ironman race experience they have at the time of a particular race
* breaking out the Ironman times into swim/bike/run components (to see how race factors affect the particular legs differently)
* some sort of measure of the difficulty of each leg (ocean swim or lake swim? was there a current? hilly bike course or flat? hilly run course?)