The Bike Commute Challenge is the nation's premier employer bike commute event. It's also a great motivator to jump on your bike and arrive at work energized and with a few more dollars in your pocket.
If you live too far to bike the entire way - no problem. You can combine biking with any other travel mode and still log it as a bike trip - even if you only bike one-way. See TriMet's or C-Tran's web site for information on biking and public transit.