Commuters willing to try what surveys show is one of the fastest methods of commuting in Washington's rush-hour traffic - by bicycle - will have a chance tomorrow to join a bicycle "commuter caravan" that will be spinning into the city from outlying areas.

The more than 35 caravans are part of Washington's Bike Days, a week of bike races, rallies and other events sponsored by area bicycle groups. Two events are scheduled on the Ellipse: At noon Friday ther will be a rally, with bike demonstrations and speeches by several congressmen who are bicycle enthusiasts, and from 11 a.m. to 4 p.m. Saturday there will a blue grass and beer bike rally.

Tomorrow's caravans, which will be led by experienced bike commuters, will leave from 28 different suburban locations, including 12 in Northern Virginia, from 6:20 a.m. to 8:10 a.m. All will end at the Mall. Northern Virginia departure points and times:


Thomas Jefferson Junior High parking lot, at 6:20, 7:30 and 8:10 a.m.

Westwove Branch Public Library, near 18th and N. Lexington streets, at 7 and 7:30 a.m.

National Orthopedic Hospital parking lot, near 1.395 between 25th and 26th streets, at 8:10 a.m.

Columbia Pike and Courthouse Road, at 7 a.m.

Columbia Pike and Dinwiddie (Safeway parking lot), at 7:45 a.m.

Hecht Company parking lot in Parkington, near Wilson Boulevard and Glebe Road, at 7:45 a.m.


Bradlee Shopping Center (Safeway parking lot), at 6:45 a.m.

Washington Sailing Marina, south of National Airpot by parkway, at 6:30 a.m.

George Washington National Masonic Temple, 7:30 a.m.

Arlandria, at Mount Vernon Avenue and Russell Road, 7:30 a.m.

Fairfax County:

Evans Farm Inn, Rte. 123 and Great Falls Road, at 7:30 a.m.

Woodburn Elementary School, near Gallows and Hemlock roads, at 7:30 a.m.