- I don't think the 'narrow' canal aids drafting to any degree. If anything the wave starts (even men and women pros are seperated) would slow rather than speed up the swim.
- Short Transition runs. I totaled 4mins for both on Sunday without really pushing.
- Bike course. I measured 177Km. ( so add 4'30" to Chrissie's time). Superbly smooth roads as you say, the short climbs with gradual descents really keep the average speed up. With the crowds you don't even feel the short climbs. It's amazing. Also, whatever wind there was on Sunday seemed only to be head on for about 2Km. I did measure 1500m climb for the bike (Nice by comparision is 2200m), but total elevation isn't everything.
- Very long aid stations so you don't have to slow down too much to get what you need. No Special needs bags!
- The run course is not totally flat, also it is on the canal pathway which is probably not the fastest running surface. However most of it is shaded from the sun by the trees which is very important. I measured 41.6Km for the run, so add another 3mins to Chrissie's time.
- For 2010 the weather could not have been more perfect for fast racing conditions. Temp was quite low and no humidity.
For the record I was training about 15,000Km/year in 2007/2008 and my best ever IM bike split was 5:32 IMKY. This year I'm at about 30% of those training levels, no long rides and at least 10Kg heavier, and on Sunday I went 5h22 fairly comfortably. It is fast course.
So I think that an honest time for what Chrissie did was 8h27, which in no way diminishes the enormity of that landmark performance. It was a perfect storm with Chrissie (without an early season IM in her legs) and the race conditions all coming together at the right moment. I'm not sure I will ever see that time beaten by Chrissie or any other female.
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