Cherono finished seventh in the senior races at both the 2007 and 2008 IAAF World Cross Country Championships, sharing in a team silver medal with Kenya on both occasions. She won the Itálica and Juan Muguerza cross country meets in 2008. She represented Kenya at the 2008 Summer Olympics, coming eleventh in the 5000 m final. Her season ended with a fifth-place finish over 5000 m at the 2008 IAAF World Athletics Final. She missed virtually all of 2009 and 2010 as she took time away from the sport to have her first child.