Nairobi: Kenya`s Vivian Cheruiyot will not be able to defend her 5,000 metres and 10,000 metres titles at this year`s Moscow World championships as she is expecting her first child.
The runner said in a statement Wednesday that she felt it was "the right time to start a family" at the age of 29.
Cheruiyot plans to return for the 2014 season and compete in the 2015 World championships in Beijing.
The Kenyan runner has not competed since she won a 5,000m silver and 10,000m bronze medal at the London Olympics last August. She won her titles over both distances at the last World championships at Daegu in South Korea.