The 30th Seattle to Portland Bicycle Classic is Saturday and Sunday which means you can expect to find some Washington roads from Seattle to Longview packed with cyclists.

The 204-mile ride sponsored by Seattle’s Cascade Bicycle Club has been sold out since June 1. The ride will include 10,000 cyclists, more than 2,000 of which will try to finish the ride in one day. Last year participants from 46 states and seven countries rode in the event.

The start line at the University of Washington opens at 4:45 a.m.

While the ride is two days, all of the riders are expected to travel at least as far as Centralia on Sunday.

The Washington Department of Transportation issued a traffic advisory for the event. The advisory asks for drivers to be diligent and constantly aware of cyclists and to be prepared for delays.

Roads in King, Pierce and Thurston counties that are part of the route include Highway 181, Highway 7 in Spanaway, Highway 507 from Spanaway to Centralia. County and city roads in Puyallup are also used for the route.

I'll be riding the event for the third year in a row, this time with a couple of first-timers, and will post dispatch here on Sunday night.

Please feel free to share your stories here too.