This site attempts to list every North American ultramarathon (foot races longer than a standard 26.2 mile marathon) in several convenient calendars. This includes 50k, 50 mile, 100k, 100 mile races, and 6, 12, or 24 hour events. The race schedules are divided by date, state or province, and distance. To date there are about 600 races listed here, making this the largest collection of ultrarunning events on the Internet!  I also have links to various online training plans and advice, along with many ultra and other trail running links (I even threw in a few road running links). This site was designed by runners for runners- enjoy! If you have any links to add, please contact me below.

Updates (6/2/2009):

I have reformatted all three calendar pages to make them more user-friendly.  Hopefully it will now be easier to distinguish races based on the year the race is scheduled.  Please give me feedback!  Thank you to all those that so graciously donated to the site!  If you have a race or link to add, contact me here!