Endomondo National Bike Challenge

Workout tracking and stats site Endomondo is throwing down a challenge to all cyclists; log as many miles as you can between May 1st and August 31st with a goal of uniting 50,000 cyclists in logging 10 million miles. Their National Bike Challenge, which is sponsored by Bikes Belong and the League of American Bicyclists, is a terrific way to really show the impact cycling nationwide. You can watch the miles, calories and thousands of tons of carbon dioxide savings add up right from their site.

You can easily log your miles from your smart phone using their free app, and share your commutes or workouts easily with your friends through your social media outlet of choice. This app is really simple to use. Just hit start, stash your phone in your pocket, and hit stop when your done. Your stats are automatically uploaded to your Endomondo account so you can check out speed, distance and elevation from your phone or computer. You can set routes, race your best times, or your friends.