Managed by runners, since 2008 RunningCalendar.com is constantly growing to be the most comprehensive list of running events in the world - 5K & 10K fun runs, half marathons, marathons and ultramarathons. The complete running event calendar - provided as a public service to the running community - includes road races, trail races, and other unusual running events. Check out our list of running races and find one near you. Race organizers add or update your event.