Nude Runners Calendar
- Provides a world-wide calendar of nude running events. Contains dates and locations of events as well as email addresses and links to event sites.
- http://nuderuns.com

SSTRunning: Running Event Information
- A public service listing of some running events with an actual runner's description of the course.
- http://www.sstrunning.org/

World Run Day
- An event that asks runners around the world to run any distance they desire, and donate to their favorite charity.
- http://www.runday.com/