Greenlight is an online portal for bicycle commuters that enables riders to track their miles while competing in bike commuting “leagues”. From Greenlight:
Welcome to Greenlight, your portal to a world of cycling, competition and community. Part online game, part real-world sport, Greenlight transforms your ordinary commute into a high-stakes scramble to rack miles and leave your rivals grinding their granny gears. Whether you want to set new personal goals or team up with others to conquer the world, Greenlight helps you do it—one ride at a time.
You can sign up as an individual to track your personal miles, or if you’d like to participate in the competition, you can join one of the teams and your miles will contribute to the team total. I set up an EcoVelo team; right now I’m the lone team member, but I’d love to have some team mates if you’re interested.
Greenlight is by far the best mileage logging application I’ve seen, with teams, leagues, a forum, and many cool features that streamline the data entry process. Plus, I like the fact that the site is oriented toward commuters and utility bicyclists.