Marathoning is Booming - According to Running USA

Year Estimated U.S. Marathon Finisher Total
1976 25,000
1980 143,000
1990 224,000
1995 293,000
2000 353,000
2004 386,000
2005 395,000
2006 410,000
2007 412,000
2008 425,000
2009 467,000 (record total)