Nearly 1,000 people are expected in Old Ballard for the Second Ascent Twilight Criterium on Saturday.

Photo from the 2009 Second Ascent Twilight Criterium.
In a criterium, cyclists race to complete the most laps in a given time. There are six different races with the first starting at 3:30 p.m. The marquee event is the men’s pro, 1 & 2 race which starts at 7:30 p.m. and lasts for 70 minutes. Cyclists in the last race can go speeds of 35 miles per hour on the four-corner course.

Photo from the 2009 Second Ascent Twilight Criterium.
These following streets will be closed from 2:30 to 9 p.m.:
(Thanks John for the tip!)