Marathon road closures

This year's Edward Hospital Naperville Marathon and Half Marathon will tread on 27 miles of streets within Naperville on Sunday, up from 9 road miles last year. Organizers say the routes cross 285 intersections, which will be staffed by volunteers and/or police. Roads will be closed on a "rolling" basis, meaning they won't close until runners are approaching and they'll reopen when all runners are past.

A new interactive detour map on the city of Naperville's website at naperville.il.us/napervillemarathon.aspx can help people determine how to get to their destinations. The city also has developed a parking and spectator guide that notes shuttle service, parking areas and preferred public spectator spots.

Here is a list of intersections that will be affected with closures and detours at the following approximate times, beginning at the start of the race and ending at the finish:

• Hillside Road and West Street: 6:30 to 8 a.m.

• Rickert Drive and West Street: 6:30 to 8:30 a.m.

• 75th Street and Rickert Drive: 6:30 to 8:30 a.m.

• Rickert Drive and Bailey Road: 6:30 to 8:30 a.m.

• Bailey and Modaff roads: 6:45 to 8:45 a.m.

• 87th Street and Modaff road: 6:45 to 9 a.m.

• Modaff Road and Dupahze Street: 7 to 9 a.m.

• Dupahze Street and Seiler Drive: 7 to 9 a.m.

• Seiler and Gateshead drives: 7 to 9 a.m.

• Leverenz at Plainfield/Naperville and Book roads: 7:15 to 9:30 a.m.

• Book Road at 87th and 83rd streets: 7:15 to 10 a.m.

• Book Road and 75th Street: 7:30 to 10:30 a.m.

• Whispering Hills Drive and Oswego Road: 7:30 to 10:30 a.m.

• West Street and Aurora Avenue: 7:30 to 10:30 a.m.

• Mill Street and Ogden Avenue: 8 to 11:30 a.m.

• Mill Street and Jackson Avenue: 8 to 11:45 a.m.

• Washington Street at Jackson and Chicago avenues: 8 a.m. to 2 p.m.

• Washington Street and Hobson Road: 8:45 a.m. to 2 p.m.

• Washington Street and Hillside Road: 8:30 a.m. to 2 p.m.