The 2016 Race for Hope—a 5K charity trek to fundraise for brain-tumor research—will close a number of downtown streets on Sunday.

According to the Metropolitan Police Department and the District Department of Transportation, residents should prepare for the following changes:

“The following streets around Freedom Plaza will be closed from approximately 4:00 a.m. to 1:00 p.m.:

  • Pennsylvania Avenue NW between 12th and 14th Street NW
  • 13th Street between E Street and Pennsylvania Avenue NW

The run will start at approximately 9:00 a.m. in the 1200 block of Pennsylvania Avenue NW. The following streets will be closed from approximately 9:00 a.m. to 12:00 p.m.

  • Pennsylvania Avenue NW from Third Street to 14th Street NW
  • Constitution Avenue NW from Seventh Street to Third Street NW
  • 13th Street NW from E Street to Pennsylvania Avenue NW
  • 12th Street NW from E Street to Constitution Avenue NW
  • 11th Street NW from E Street to Pennsylvania Avenue NW
  • 10th Street NW from E Street to Constitution Avenue NW
  • Ninth Street NW from E Street to Constitution Avenue NW
  • Seventh Street NW from Constitution Avenue to D Street NW
  • Sixth Street NW from Constitution Avenue to D Street NW
  • Fourth Street NW from Pennsylvania Avenue NW to E Street SW
  • Third Street NW from Constitution Avenue NW to E Street SW
  • Independence Avenue SW from Seventh Street SW to Washington Avene SW
  • C Street SW from Sixth Street SW to Second Street SW
  • D Street SW from Sixth Street SW to Second Street SW”

Farther uptown, the annual “Sundress Fest” at Wonderland Ballroom in Columbia Heights will close Kenyon Street NW from 11th Street to 13th Street NW, from 8 a.m. to 9 p.m. The 12th iteration of the event will feature beer, food, music, and—yes—sundresses. This year’s proceeds will go to D.C. Central Kitchen, the organizers note on Facebook.

“We’ll have an all-day happy hour for ANYONE in a sundress,” Wonderland explains on its site. “You can bring your own sundress, or get one at Wonderland. There will be racks of sundresses, and everyone will find a one that fits.”

The Race for Hope has already raised $1.75 million, according to its organizers. Thousands are expected to turn out.

Photo by Darrow Montgomery; map via Race for Hope