A fellow competitor in the Nike+ challenge world introduced me to Athlinks.com. From their website:
Athlinks is the most comprehensive database of endurance race results and events anywhere in the world. We currently provide coverage in the U.S. and parts of Canada and Mexico for six different race categories: Running (over 3 K), Swimming (open water and/or over 500 M), Cycling, Mountain Biking, Triathlon/Multi Sport, and Adventure Racing.
It allows you to collect and post your race times and results, create and share your gear; shoes, HRM, bikes, trainers etc. You can list your friends (and your rivals), upload photos and send messages to other members, all pretty cool stuff.
Get to know your fellow runner post your profile today, check out who has a profile posted in your Nike+ challenge