IF YOU'RE planning to watch the finish of the Broad Street Run on Sunday, pack light.

Mayor Nutter said yesterday that spectators will not be permitted to bring bags or backpacks into the Navy Yard at the race's end.

The security precaution follows the deadly bombings at the Boston Marathon.

Nutter also discouraged fans from carrying bags elsewhere along the course, although they are not banned from doing so. Organizers will provide transparent plastic bags to people who need to carry their belongings.

There is no specific threat to Philadelphia, Nutter said, but the city will be on "heightened alert."

In the event of an emergency, Nutter said there will be three evacuation shelters along Broad Street: Ben Franklin High School, at Spring Garden; Philadelphia High School for Creative and Performing Arts, at Christian; and South Philadelphia High School, at Snyder Avenue.

Runners can register to receive emergency-alert text messages at readynotifypa.org.

Runners will get "From Philly to Boston with Love" stickers, and attendees will be encouraged to donate to One Fund Boston.

On Twitter: @SeanWalshDN