If you thought last week’s Giro di San Francisco was it for bicycle racing in the city for the summer, make way for the San Francisco Twilight Criterium, an event taking place early Saturday in the Cow Hollow neighborhood.

A cycling “criterium” event is defined by USA Cycling as a multi-lap race on a closed course lasting one to two hours. In San Francisco, they’ll be making a 1 km loop around Union, Fillmore, Greenwich and Buchanan Streets. That includes the fancy part of Union St.

Streets in the area will be closed from 2:00 pm that day. Parking will be available at Marina Middle School, with the $10 parking fee benefiting school programs.

Photo copyright Lily Trevisanut, used by permission.

It’ll be a hot one today, ladies and gentlemen, and hotter tomorrow, due to that late-summer east-wind thing. In the worst case, wildfires will destroy several thousand acres in the East Bay. In the best case, the only burning will be in Dolores Park — sunburning, that is.

If you’d rather get sunburned standing up than lying down, there’s bicycle racing in town today as the Giro di San Francisco (which is Italian for “Tour de San Francisco”) goes until 4:00 pm. The race’s epicenter is Levi’s Plaza.