Island Runner
islandrunner.org
Provides an international listing of runs that take place on islands. Races are organized by country. Also provides a message board.
BKB Limited Event Management
bkbltd.com
Local and international races from a family fun run to marathons with online registration and past results.
W2 Promotions Professional Road Race Management
w2promotions.com
Aids non-profit organizations raise awareness and funds by organizing 5K and 10K runs and walks, marathons, triathlons, and family fun runs.
Nude Runners Calendar
wanr.earthbiz.net
Provides a world-wide listing of nude running events. Also contains some links to the event sites.