The 40th London Marathon airs live on NBCSN and NBC Sports Gold on Sunday morning.
World record holders Eliud Kipchoge and Brigid Kosgei of Kenya headline the fields for the elite-only races with no spectators on a different, looped course at St. James’s Park.
NBCSN coverage starts at 2 a.m. ET.
Unlike traditional major marathons, the women will finish their race before the men start.
Race start times (ET)
Elite women — 2:15 a.m.
Elite men — 5:15
Elite wheelchair — 8:10
Unlike previous London Marathon, athletes will cover 19 laps of the park, then move to the Mall for the traditional finish.