Amane Gobena of Ethiopia won the women's race and Gebo Burka of Ethiopia won the men's race in the 29th Asics L.A. Marathon.
Gobena, 31, won in 2 hours 27 minutes 37 seconds, collecting $25,000 for the victory.
Burka, 26, clocked a 2:10:37 to win a marathon for the first time. He also won $25,000.
Gobena won $50,000 for winning the gender "challenge." The women were given a 17:41 head start and Gobena finished 41 seconds ahead of Burka.
Joshua George won the men's wheelchair race in 1:33:11.
Tigist Tufa of Ethiopia was second in 2:28:04 and Lauren Kleppin of the United States was third in 2:28:48 in the women's race.
Lani Rutto of Kenya was second in 2:10:48 and defending champion Erick Mose third in 2:12:56 in the men's race.
With 6.2 miles left in the 29th annual Asics L.A. Marathon, two women and two men are pulling away in their respective races.
Tigist Tufa of Ethiopia clocked 1 hour 51 minutes 9 seconds for a narrow lead over Amane Gobena in the women's race.
Lani Rutto of Kenya clocked 1:39:53 for a slight lead over Ethiopia's Gebo Burka in the men's race.
Ethiopia's Tigist Tufa and Amane Gobena have broken away from the lead women's pack at the 18-mile mark in the 29th Asics L.A. Marathon.
Tufa clocked 1 hour 45 minutes 34 seconds through 19 miles.
Lani Rutto of Kenya, Gebo Burka of Ethiopia and Dawit Wolde of Ethiopia are leading the men's race in the 19th mile.
Habtamu Asefa of Ethiopia leads a group of five runners who appear to be pulling away at the halfway mark in the men's race of the 29th Asics L.A. Marathon.
Asefa passed the 13.1-mile mark in 1 hour 5 minutes 57 seconds.
Defending champion Erick Mose fell off the pace. Kenyan Julius Keter, who finished second last year, is in the lead pack.