Road Closures for the 2025 Cambridge 5k and Half Marathon on November 1 and 2

Expect road closures and traffic impacts on Saturday November 1 and Sunday, November 2 due to the 2nd Annual 5K and 8th Annual Cambridge Half Marathon.

5k Road Closures: November 1

The race begins and ends at CambridgeSide in East Cambridge. Beginning at 10 a.m., participants will travel through Kendall Square and Cambridgeport. Expect road closures in the area between 9 a.m. and noon on Saturday, November 1.

The following roads will close during the event:

Closures along the race route: 

• Land Boulevard (from Binney Street to Memorial Drive): 9:45 a.m. to 11 a.m.
• Memorial Drive - east and westbound (from Land Boulevard to BU Bridge): 9:45 a.m. to 11:00 a.m.

Closures between First Street and Second Street near CambridgeSide

• Otis Street (from Second Street to First Street): 9 a.m. to noon
• Thorndike Street (from Second Street to First Street): 9 a.m. to noon
• Spring Street (from Second Street to First Street): 9 a.m. to noon
• Charles Street (from Second Street to First Street): 9 a.m. to noon
• Bent Street (from Second Street to First Street): 9 a.m. to noon
• Rogers Street (from Second Street to First Street): 9 a.m. to noon
• Binney Street (from Second Street to First Street): 9 a.m. to noon
• Linskey Way (from Second Street to First Street): 9 a.m. to noon
• Athenaeum Street (from Second Street to First Street): 9 a.m. to noon

Half Marathon Road Closures: November 2

The race begins and ends at CambridgeSide in East Cambridge. Beginning at 7 a.m., participants will travel through Kendall Square, Cambridgeport, Riverside, West Cambridge, Lower Allston, and Watertown. Roads along the course will close during the event. Expect road closures in the area between 5 a.m. and noon on Sunday, November 2.

The following roads will close during the event:

Closures along the race route: 

• Land Boulevard (from Binney Street to Memorial Drive): 6:30 a.m. to 10 a.m.
• Memorial Drive - westbound (from First Street to Gerry's Landing Road): 6:30 a.m. to 10 a.m.
• Memorial Drive - eastbound (from Gerry's Landing Road to First Street): 6:30 a.m. to 10 a.m.
• First Street (from Cambridge Street to Memorial Drive): 5 a.m. to noon

Bridge closures: 

• Western Avenue Bridge: 6:30 a.m. to 10 a.m.
• River Street Bridge: 6:30 a.m. to 10 a.m.
• Anderson Memorial Bridge: 6:30 a.m. to 10 a.m.

Closures between First Street and Second Street near CambridgeSide

• Otis Street (from Second Street to First Street): 5 a.m. to noon
• Thorndike Street (from Second Street to First Street): 5 a.m. to noon
• Spring Street (from Second Street to First Street): 5 a.m. to noon
• Hurley Street (from Second Street to First Street): 5 a.m. to noon
• Charles Street (from Second Street to First Street): 5 a.m. to noon
• Bent Street (from Second Street to First Street): 5 a.m. to noon
• Rogers Street (from Second Street to First Street): 5 a.m. to noon
• Binney Street (from Second Street to First Street): 5 a.m. to noon
• Linskey Way (from Second Street to First Street): 5 a.m. to noon
• Athenaeum Street (from Second Street to First Street): 5 a.m. to noon

Cambridge Police details will be in place along the course. If you have questions, please contact cambridgesideraces@cambridgema.gov.