There is a number of factors that affect how many race calendars in our database your race will be listed on, including:
Some race calendars may only accept races of a certain type (e.g. running races only or triathlons only)
Some race calendars may only accept races of a certain distance (e.g.s half marathons or ultramarathons only)
Some race calendars may only accept races in a specific region (e.g. a specific state or city)
Typically, races will be matched with between 25-35 race calendars, including international, nationwide and regional calendars.
You can always see the number of race calendars matched with your race before submitting your race for listing by running a listing report.