The Arroyo Seco Freako Microthon has been run every year since 1975.
Race announcements and results from 2004 onward are linked below.
2017 2016 2015 2014 2013 2012 2011 2010
Race announcements and results from 1995 through 2003 were communicated via email and not originally posted on any website:
2003 2002 2001 2000 1999 1998 1997 1996 1995
Information about the first 20 races from 1975 through 1994 was originally communicated via two separate paper flyers: an announcement flyer and a results flyer. Scanned (pdf) copies of these flyers are linked below.
Race announcement flyers from the first 20 years (pdf):
1994 1993 1992 1991 1990 1989 1988 1987 1986 1985
1984 1983 1982 1981 1980 1979 1978 1977 1976
Race results flyers from the first 20 years (pdf):
1994 1993 1992 1991 1990 1989 1988 1987 1986 1985
1984 1983 1982 1981 1980 1979 1978 1977 1976 1975
The first Arroyo Seco Freako Microthon on April 1, 1975 was a two-team relay challenge match among the five Originals (John Beckman, Len Efron, Ken Atkins, Dick Davies, and Lou Friedman). Each 2.5-mile relay leg looped across the dam and returned through the wash. There was no pre-race announcement flyer, but an official "track memorandum" describes the results.
Missing data - Note that we're currently missing: emailed information from the 1995-1996 races; emailed race results from 2001 and 2003; paper announcement flyers from 1991-1992; and paper results flyers from 1988 and 1990-1991. If anyone has copies of the missing emails or flyers from these race years in your personal files, please send the race information to Melora Larson so we can post it on this website.
Race courses over the years - The course for the Arroyo Seco Freako Microthon takes runners in and around the wash south of JPL, but the exact route has varied from year to year due to trail and bridge conditions. See this list of all the routes used over the history of this race.