PHOTO BY DAVE DICELLO

The early bird gets the worm, but even the birds may not be awake when Downtown roads start to close early Sunday morning for the Pittsburgh Marathon.

Road closures begin at 1:30 a.m. on Liberty Avenue where the race is set to start. Streets in the city are organized into sectors and will close and reopen at intervals along the race’s 26.2-mile course.

Related: This Week in Pittsburgh History: A Married Couple Wins the First Pittsburgh Marathon

Note: The Boulevard of the Allies, Downtown, will close Friday at noon between Wood and Stanwix streets. The city is preparing for Saturday’s races too:

• 5K: Start time 7:30 a.m.
• Toddler Trot: Start time 8:30 a.m.
• Champions Mile: Start time 8:30 a.m.
• Kids Marathon: Start time 9:30 a.m.
• Pet Walk: Start time noon

A map for those events can be found here.

What roads will be closed for the Pittsburgh Marathon?

Race organizers have put together a “Marathon Escape Guide” that details how to get in and out of the city during the marathon.

In the guide are sections of the city and their approximate closure times.

• Start Line Corrals, Liberty Avenue from Commonwealth Place to Smithfield Street: 1:30 a.m.
• Liberty Avenue in the Strip District: 5:30 a.m. to 2:30 p.m.
• Penn Avenue in the Strip District: 6 a.m. to 9:45 a.m.
• North Side: 6 a.m to 9:45 a.m.
• North Shore to West End Bridge: 6 a.m. to 10 a.m.
• West End: 6 a.m. to 10:15 a.m.
• South Shore: 6 a.m. to 11 a.m.
• South Side: 6 a.m. to 11:15 a.m.
• Uptown: 6:15 a.m. to 11:45 a.m.
• Oakland: 6:15 a.m. to 11:45 a.m.
• Shadyside: 6:30 a.m. to noon
• Point Breeze: 6:30 a.m. 12:15 p.m.
• Homewood: 7 a.m. to 12:45 p.m.
• East Liberty: 7 a.m. to 1 p.m.
• Highland Park: 7 a.m. to 1:15 p.m.
• Friendship: 7 a.m. to 1:30 p.m.
• Bloomfield: 7 a.m. to 1:45 p.m.
• Lower Lawrenceville: 7 a.m. to 2 p.m.
• Downtown: 5:30 a.m. to 2:50 p.m.
• Downtown: Boulevard of the Allies, Friday at noon to Sunday at 5:30 p.m.