RALEIGH — Two races will wind through the city this weekend, one of them temporarily closing streets on Saturday.

Saturday’s the Run For Our Heroes 5K, hosted by the Raleigh Police Memorial foundation to honor the eight Raleigh police officers who were killed in the line of duty, starts at 9 a.m. Rolling road closures, ranging from 20 to 50 minutes long, will start at 8:30 a.m. with Dawson Street from Hillsborough to Davie Street.

The rest of the closures take place between 9 and 10 a.m.: McDowell Street from Cabarrus Street to Martin Street; Wilmington Street from Peace Street to Hargett Street; Edenton Street from Person Street to Blount Street; Peace from Person to Salisbury Street; Blount from East Franklin Street to Hargett; Wake Forest Road from Glascock Street to Blount, and Hargett from Blount to Dawson.

Then on Sunday, participants in the Triangle Orthopaedic Sprint Triathlon will bike a 10-mile southwest-Raleigh loop starting and ending at the North Carolina State Centennial Campus. Running from 8 a.m. to 10 a.m., that race will not result in street closures, but cyclists will be using street routes with officers posted at major intersections.

The race starts at Centennial Campus, turns right on Lake Wheeler Road from Centennial Campus Parkway, right on Tryon Road, right on Avent Ferry Road, and right on Centennial Parkway to return to the starting point. The biking will be sandwiched between a 750-meter swim and a 3.1 mile run, both held on the Centennial Campus.