Event	Percent of Starters DNF		Average Hours to Complete
	2006	1993-2005	2007	1993-2006
200K	3.2%	4.0%	10.2	9.8
300K	1.1%	9.4%	14.8	15.1
400K	3.6%	14.4%	21.0	20.9
600K	9.1%	17.3%	34.8	35.3
1000K			71.3
1200K	18.2%		82.5