By Kristen Johanson

PHILADELPHIA (CBS) — Tens of thousands of people are expected to run and watch the famous 10-mile Broad Street Run on Sunday. But with Broad Street being closed comes some SEPTA detours.

“Any bus that they would take in the Center City area, that bus is likely going to be on detour starting at 730 a.m., and then we will get those buses back to regular routing afterward,” said SEPTA spokesperson Andrew Busch.

Busch says all Broad Street Run participants wearing a running bib can ride the Broad Street subway for free from Olney to AT&T stations. He says SEPTA will be running more trips to accommodate the masses.

“We are running express trips every 10 minutes starting at 4:45 a.m. going to 8:30 a.m.,” he said. “The extra service will be between AT&T and Olney.”

As soon as the race is over, Busch says all will be back to normal. For full information on which lines are affected, head to SEPTA’s website.

Bus lines detoured on Sunday starting at 4:45am: 3, 4, 7, 9, 12, 15, 16, 17, 21, 23, 27, 29, 31, 32, 33, 37, 38, 39, 40, 42, 43, 44, 45, 48, 53, 54, 56, 60, 61, 64, 68, 75, 79, 124, 125, G, J, H, XH and R. Buses will also replace trolleys along the Route 15.