Free listing web sites:
http://eventadmin.runnersworld.com/raceevent/login.html
http://www.AllSportCentral.com/tipsheet.cfm
http://www.eventhub.com
http://www.imATHLETE.com/features
http://www.marathonguide.com
http://www.mymarathonplanner.com/admin/races/manageRaces.php?id=261
http://www.mynextrace.com
http://www.purefitradio.com
http://www.raceit.com
http://www.runningcalendar.com
http://www.runningintheusa.com/Race/Submit.aspx
http://www.runningmyraces.com/events/addform.php
http://www.runningnetwork.com/RN_calendar/events/index.php?com=submit
http://www.runsignup.com
http://www.runwashington.com/calendar/eventdirectors.htm
http://www.somethingtudu.com
http://www.sportoften.com
https://www.findsportsnow.com