The California couple has deep ties to east Africa.
Her next stop is the Suja Rock 'n' Roll San Diego Half Marathon.
Kenyans Daniel Limo and Ogla Kimaiyo take the overall victories on a warm day.
The husband-wife team head into the LA Marathon on different trajectories.
This weekend's event will feature many of the top runners in the country.
The 31-year-old is excited to compete for a national title on March 15.
The American defeated Olympians Abdi Abdirahman and Ryan Hall at the Gatorade Half Marathon in San Jose.
Ryan and Sara Hall, Abdi Abdirahman and Matt Llano headline the second running of the Gatorade San José Half Marathon.
Seven U.S. Olympians are in the July 4 Peachtree Road Race, which doubles as the national championship.