San Antonio Resurfaces South Alamo Street for Marathon

Downtown lane closures on South Alamo Street are underway ahead of the December San Antonio Marathon.

Updated on Nov. 11, 2026 in Running

Freshly paved dark asphalt road stretches toward low-rise limestone-toned downtown buildings beneath a clear sky, with orange cones along the edge. — The City of San Antonio is resurfacing South Alamo Street between East Commerce and West Market streets, a delayed project meant to ready downtown roads for the December marathon. AI Illustration. Upload story photo >

The City of San Antonio is closing South Alamo Street between East Commerce and West Market streets, near the Torch of Friendship, for road resurfacing. Work was originally scheduled to finish on November 10 but was delayed by rain this week.

Why it matters

The resurfacing prepares downtown roads for the San Antonio Marathon, whose course runs through downtown and the Near Northside. Officers are directing traffic detours in the area while crews work.

South Alamo Street is closed from 8 a.m. to 5 p.m. on November 11 and 12 between East Commerce and West Market streets. The city's project contact line is 210-207-7891.

The details

Crews are resurfacing the roadway for marathon runners, and the work was delayed by rain after an original November 10 finish target. Officers are on site to facilitate traffic detours near the Torch of Friendship.

November 10: Original scheduled completion of the roadwork.
November 11 and 12: South Alamo Street closed from 8 a.m. to 5 p.m. each day.
December 4 through December 6: San Antonio Marathon events.

Seasonal Patterns

The resurfacing is tied to the San Antonio Marathon's December 4 through 6 schedule, with its course running through downtown and the Near Northside. Road work timed ahead of the race follows the city's usual pattern of finishing downtown repairs before fall and winter events.

Drivers planning to travel through downtown San Antonio on November 11 and 12 should expect closures on South Alamo Street between 8 a.m. and 5 p.m. and follow officer-directed detours. Residents with questions can call the city project line at 210-207-7891.

The takeaway

Plan downtown travel around the South Alamo Street closures this week and allow extra time for detours, since weather has already delayed the work once.

What happens next

The San Antonio Marathon events are scheduled for December 4 through December 6, when the course through downtown and the Near Northside will be used.