Philadelphia Marathon weekend kicks off Friday as a good portion of 30,000 registered runners head to the Pennsylvania Convention Center to pick up bibs and attend the health and fitness expo.

But this year marks the first time two separate race days will be held. And that means two days of road closures.

Previously, the full 26.2 mile marathon, the 13.1 mile half marathon and the Rothman Institute 8K, were held simultaneously on Sundays.  This year, for the 23rd year of the race, the half marathon and 8K are on Saturday, along with a kids' run. The full marathon is on Sunday.

In all, 60,000 spectators and 3,000 volunteers are expected.

The city advises motorists to use mass transit for find alternate routes. Streets close on a rolling basis.

Here are key areas impacted:

  • Benjamin Franklin Parkway, Friday through Sunday.
  • Citywide, along the 26.2-mile route of  Sunday's Marathon.
  • I-676 off-ramps at 22nd Street (westbound) and 23rd Street (eastbound) will close Saturday and Sunday after 4 a.m Ramps at 15th/Broad may also close.

Here's a detailed breakdown:

Friday

Outer lanes of the Parkway close from 9:30 a.m. Lanes reopen 3:30 p.m. for the afternoon rush hour.

Saturday

For the Half Marathon, due to enhanced security, City of Philadelphia "no-parking" regulations will be enforced strictly and all vehicles on the race route will be relocated, beginning at 2 a.m.

Call the Philadelphia Parking Authority at 215-683-9550 for more information.

Street closures go into effect 2 a.m. until 3 p.m. along the Benjamin Franklin Parkway, between 20th to 25th Streets, and also on Kelly Drive, Martin Luther King Drive, and numerous other roads in Center City (see complete list below).

Best bet is to stay away from Logan Circle and anywhere near 18th and Parkway, both closed to traffic until 11:30 a.m.

Other streets affected Saturday:

  • 18th Street, from Arch to Callowhill Streets
  • 19th Street, from Arch to Callowhill Streets
  • 20th Street, from Arch to Callowhill Streets
  • 21st Street, from Spring Garden to Arch Streets
  • 22nd Street, from Spring Garden to Arch Streets
  • Benjamin Franklin Parkway, from 16th to 22nd Streets
  • Arch Street, from 6th to 16th Street
  • 6th Street, from Race to Market Streets
  • Market Street, from 5th to 17th Streets
  • East Penn Square
  • John F. Kennedy Blvd., from Juniper to 17th Streets
  • 15th Street, from Race to Chestnut Streets
  • 16th Street, from Chestnut to Race Streets
  • Lansdowne Drive, from Girard Avenue to South Concourse Drive
  • Lansdowne Drive, to Centennial Circle
  • Black Road
  • Martin Luther King Drive
  • Green Drive, Ford Road, Chamounix Drive
  • Strawberry Mansion Drive, Dauphin Drive, Reservoir Drive
  • Edgely Drive, Randolph Drive, Mt. Pleasant Drive, Fountain Green Drive
  • Kelly Drive

Streets open by 2 p.m. if they have not opened already after runners have cleared the route.

Sunday
Again, "no-parking" regulations go into effect. All vehicles on the route will be relocated starting at 2 a.m. In addition, the Parkway, from 20th to 25th Streets, closes 2 a.m. to 4 p.m. Streets along the race course open after they are cleaned.

Other streets affected:

  • 18th Street, from Arch to Callowhill Streets
  • 19th Street, from Arch to Callowhill Streets
  • 20th Street, from Arch to Callowhill Streets
  • 21st Street, from Spring Garden to Arch streets
  • 22nd Street, from Spring Garden to Arch Streets
  • Benjamin Franklin Parkway, from 22nd to 16th Streets
  • Arch Street, between 16th to 3rd Streets
  • 4th Street, between Arch to Vine Streets
  • Race Street, from 6th Street to Columbus Boulevard
  • Columbus Boulevard (Southbound lanes), from Vine Street to Washington Avenue
  • Southbound off-ramp, from I-95 at Washington Avenue
  • Washington Avenue, from Columbus Boulevard to Front Street
  • Front Street, from Washington Avenue to South Street
  • South Street, from Front to 7th Streets
  • 6th Street, from Bainbridge to Market Streets
  • Chestnut Street, from 6th to 34th Streets
  • 34th Street, Chestnut Street to Girard Avenue
  • Lansdowne Drive, from Girard Avenue to South Concourse Drive
  • South Concourse Drive, from Lansdowne to West Memorial Hall Drives
  • West Memorial Hall Drive, from South Concourse to Avenue of the Republic
  • Avenue of the Republic, from West Memorial Hall Drive to Catholic Foundtain
  • Belmont Avenue, Montgomery to Parkside Avenue
  • Black Road
  • Martin Luther King Drive
  • Kelly Drive
  • The Falls Bridge
  • Ridge Avenue, from Schoolhouse Lane to Manayunk Avenue
  • Main Street, from Ridge Avenue to Green Lane

All streets open by 6 p.m. on Sunday.