Mary Keitany Photo credit: Victah Sailer / photorun.net Mary Keitany, the world’s number one road runner in 2009, will run the BIG 25 Berlin on 9th May. The 28 year-old has entered the 30th edition of Germany’s oldest big city road race with the aim to break the world 25 k record. More than 10,000 entries are expected for the BIG 25 Berlin, which will also feature a 10 k race, a 5×5 k relay...