Timing matters: Road closures are set to begin in the early morning and will continue into the mid-afternoon, coinciding with the marathon’s schedule. The official page for the L.A. Marathon offers a comprehensive map of all affected streets.

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

Thousands of athletes from around the globe will race through the streets of Los Angeles on Sunday for the 40th running of the Los Angeles Marathon presented by ASICS. The 26.2-mile race promises an unforgettable experience,