From PortlandAfoot

Google Maps bicycle directions in Portland can be a convenient way to navigate the city, especially over short distances, despite some known issues with the free service.

[edit] Advantages

Google Maps can be faster and more intuitive to use than bycycle.org, the Portland area's first use of Google Maps for bicycling directions. It may also be easier to use on mobile devices, and appeared on those powered by Android in May 2010.

Unlike ByCycle, Google also allows click-and-drag route adjustments and one-click comparison to driving, walking and public transit routes.

Also unlike ByCycle, Google's database of bicycle routes is maintained and updated by the site's publisher.

[edit] Known issues

When Google Maps introduced bicycling directions at the National Bike Summit in March 2010, Portland users identified flaws such as sending bicyclists up the wrong lane on the Hawthorne Bridge or across the bike-unfriendly Ross Island Bridge. Though some of these problems had improved by spring 2010, others had not.

Google encourages anyone who finds problems with its bicycling directions to use the "report a problem" link at the bottom of its directions. In March 2010, Google's program manager told BikePortland.org that it takes Google "about a month" to accept or reject a given change.