The annual Pedal Nation PDX Bicycle Show at the Portland Expo Center. March 23-24th. Here's the blurb:
Bicycles are taking over the Portland Expo Center for the PDX Bicycle Show. There will be LOTS of fun entertainment and activities for every level of bicyclist in your family. Plus check out Portland’s largest display of bicycles, gear and apparel under one roof.
General admission is $10, free admission for kids under 12. Auto Parking is $8, or you can take the Yellow MAX or bring your bike (and bike lock).
More information on their website at www.pedalnationevents.com