It's free, it's fun and it's family-friendly. It's Bicycle Sunday in Seattle, and it starts this weekend.

Anyone, tot to geezer, can enjoy a scenic bike ride, walk, scooter push or skate on flat, scenic Lake Washington Boulevard without any motorized traffic to fend off.

For 12 Sundays, May through September, a 2.5-mile section of lakefront road is closed to cars from 10 a.m. to 6 p.m. between Mount Baker Beach, about a half-mile south of the Interstate 90 bridge, and Seward Park.

Dates for 2012 are May 6, 13 and 20; June 3 and 24; July 1, 8 and 15; Aug. 12 and 26, and Sept. 2 and 23.

Seattle law requires bicycle helmets for all cyclists. Discounted helmets are available for $10 from the Cascade Bicycle Club Education Foundation from 1 to 4 p.m. every Bicycle Sunday near the entrance to Seward Park.

More information: www.seattle.gov/parks/bicyclesunday.

Brian J. Cantwell, Seattle Times Travel staff