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Changes
From Fellrnr.com, Running tips
→External Links
* An analysis of elite runner's weekly mileage and performance showing that 'more is not better' http://www.powerrunning.com/Training/An%20Interesting%20Analysis%20of%20Some%20Elites.htm
* A comparison of ultramarathon difficulty based on finish times - http://realendurance.com/index.php?FinishTimeList&s=ul
* A compendium of links to other ultrarunning sites, including a race calendar and the most comprehensive list of ultra marathon training programs I've found. http://www.ultramarathonrunning.com/training/index.html
