The 40th L.A. Marathon starts at 7 a.m. Sunday at Dodger Stadium and finishes in Century City. More than 25,000 people are expected to participate.

Caltrans is scheduled to close the following freeway ramps and turn lanes of US Route 101, State Route 110 and Interstate 405 (also known as the 101, the 110 and the 405) beginning at 3 a.m. March 16, and with staggered opening through 3 p.m. Be aware that the closures may start earlier or end later.

Main course closures: These streets will be closed at various times during the day. Runners will follow some of them for the race, and others intersect with the marathon path. Freeway ramps to the 110, 101, and 405: Onramps and offramps will be closed throughout the day. Be sure to check this timetable before you hop on the freeway.