Ironman St. George 2011: Correlation Between Bike and Run Splits

With an average marathon of 5:10 and bike split of 6:41, Ironman St. George 2011 is at the top of RunTri's Toughest/Easiest Ironman list.

When it comes to balancing the bike (x, and 50% of total race time) and run (y = 77% of x), our analysis of IM StG 2011 highlights four groups: 1. Fast and Balanced; 2. Energy to Spare for a fast run; 3. Left it on the Bike Course; 4. Smooth and Steady for a slow bike and slow run.

You want to be #1 or #4.  In comparison to similar analyses of other Ironman races, the finishers at Ironman St. George seem to have struck a clear, if conservative balance between bike and run. Translation: it appears fewer blew up on the run after riding too hard on the bike course.

As the R^2 is .45, the correlation is low overall, but in an Ironman, all that really matters is reaching the finish line. For more see Ironman St. George and RunTri's Race Analysis Index.

Ironman St. George Results Analysis and Kona Qualifying Times

With a record-breaking 29% DNF (started but did not finish) rate (compared to 19% in 2011), Ironman St. George remains at the top of RunTri's Toughest Ironman Course list (though Ironman South Africa's conditions and 13:43 time rivaled St. G this year). Of the 1432 starters, only 1024 finished. The frustratingly choppy water forced 6% of starters to DNF; wind gusts up to 40 mph forced another 19% to DNF, and finally, another 4% did not complete the run. Those who did cross the finish line did so in an average of nearly 14 hours. At 13:52:55 average finish time, St. George 2012 was 16 minutes slower than in 2011.

-----------------------------------------------------------------------------------------------

2011 Race Analysis

Ironman St. George unquestionably remains at the top of RunTri's Toughest Ironman Course list.  How tough is IM StG? Of the more than 1600 who started the 2011 race, 300+ did not finish, about an 18% DNF rate. In the end, 1311 ambitious triathletes finished in a remarkably slow (= difficult) average time of 13 hours, 24 minutes.

Also see our Ironman St. George Bike/Run Correlation Analysis and RunTri's Toughest IMs.

RunTri.com Audience Demographics: Interactive Visitor Maps

More than 1.9 million visitors from 185 countries have viewed 4.2 million pages on RunTri.com. In a typical week, RunTri.com is visited by athletes from 2,500+ cities, many of which are represented on interactive visitor maps below. Scroll, drag, zoom, and click red markers to see stats of visits by town. For more, see About RunTri.com.

North America   

Europe



Asia-Pacific



Central and South America



Middle-East and Africa