Nico Sanchez [Flickr]

2009 Amgen Tour of California champion Levi Leipheimer rides a time trial in Sacramento.

DOWNTOWN LOS ANGELES — Stage 7 of the 2010 Amgen Tour of California will bring a field of 128 professional cyclists and thousands of spectators to the streets of Downtown next Saturday, and race organizers are taking care to send out early notice about the event's street closures and traffic impacts.

The time trial will take riders 21 miles, around two loops of a course that starts at L.A. Live, runs south to the Coliseum and then travels north around City Hall before returning.

In Downtown, Olive street will be closed from 1st to 11th from early in the morning on Saturday, May 22, until roughly 5pm. 1st and Temple will both be closed between Grand and Main. Grand, Hill, Broadway, Spring and Main will all be closed between Temple and 1st.

11th will be closed between Georgia St. and Olive, and through traffic past 11th will be blocked on Hope and Grand. Flower will be closed between 11th and Pico, Pico will be closed between Figueroa and Flower, and Figueroa will be closed from Olympic to Venice. South of Venice, one lane of traffic will be open in each direction.

Those looking to get from one side of Downtown to the other should be able to use the 2nd and 3rd street tunnels, though traffic may be impacted.

Racing will begin at 11am, with riders taking off in 10-minute intervals until 4:15pm.

The 8-stage race runs from May 16 - 23, making its way from Sacramento and the Bay Area to Los Angeles. It is owned by AEG, the developer of the L.A. Live complex. Participants include Lance Armstrong, 2009 champion Levi Leipheimer, David Zabriskie and George Hincapie.