Thomson ReutersJanuary 25, 2013 08:15
* Three-times Olympic champion debuts over distance
* Eleven sub-2:06 runners in men's field
By Mitch Phillips
LONDON, Jan 25 (Reuters) - Multi-world and Olympic 5,000 and 10,000 metres champion Tirunesh Dibaba, arguably the greatest women's distance runner of all time, will make her marathon debut in London in April, race organisers said on Friday.