Haile Gebrselassie on Twitter: "Thank you for a great weekend and fantastic races @adidasrunning! https://t.co/NOvw59r04P" / Twitter
adidas Running on Twitter: "In a running shoe built for personal bests, Tirfi Tsegaye raced to victory in the 2014 Berlin Marathon wearing the adizero adios Boost 2.0. Her PB and competition
Haile Gebrselassie - Zimbio
Adidas reveals shoe created to break two hours in the marathon - Canadian Running Magazine