Several roads across Los Angeles will be closed for the 40th LA Marathon, impacting traffic for many residents.

Thousands of runners and spectators across the world will be in Southern California this weekend for the 40th Los Angeles Marathon. This year, the LA Marathon falls on Sunday, March 16 and it's a sold-out event.

When the L.A. Marathon kicks off on Sunday, March 16, you’re going to want to avoid driving near some of the city’s busiest areas starting at 4 or 5am and until later in the morning or afternoon: Steer clear of Downtown until a little after 10am, avoid Hollywood (specifically near Hollywood Boulevard) until around noon and Beverly Hills until 1pm.

From road closures and top runners to race day events and where to watch, here are 10 essential things to know before race day.

The 40th LA Marathon weekend presented by ASICS is set to kick off this morning ahead of the marathon itself on Sunday.

Los Angeles Marathon presented by ASICS will celebrate its 40th running on Sunday, March 16 with a competitive field of world-class athletes. More than 25,000 runners will take on the iconic “Stadium to the Stars” course,