|Olympic medal record|
|2011 Maputo||Half marathon|
He was selected to compete at the 2007 World Championships in Athletics but he finished eleventh in his heat and did not make the final. He won the Carlsbad 5000 in his first ever 5 km road race, beating Abreham Cherkos in a time of 13:19. At the 2009 World Championships in Athletics, he finished sixth in his 5000 m heat, however he just didn't make the final, losing out to Chakir Boujattaoui. Running at the Rock ‘n’ Roll Las Vegas Half Marathon, he set a Nevada state record of 1:01:40 on the way to victory.
He ran in the 2010 New York City Half Marathon and set a personal best of 1:01:23 for fourth place. He began to work towards a step up to the marathon distance at the end of the year and won at the inaugural Ethiopian Clubs Cross Country Championships as part of his preparations, defeating marathon runner Feyisa Lilesa. He ran at the 2010 Amsterdam Marathon and finished in twelfth with a time of 2:14:40.
He was much more successful on his second attempt at the distance as he broke the course record to win the Houston Marathon in January 2011, running a Texas state record of 2:07:04 hours to finish four minutes ahead of the competition. The mark was achieved in spite of the rainy conditions and his lead was so significant that in the final stages of the race he decided to stop at a nearby portable toilet for a bathroom break. At the 2011 Chicago Marathon he ran a time of 2:07:59 hours for fourth place behind a Kenyan trio. In his first race of 2012, he failed to finish at the Lake Biwa Marathon.
- 5000 Metres - M Heats. IAAF (2007-08-30). Retrieved on 2010-04-12.
- Cruz, Dan (2009-04-06). Ethiopians dominate Carlsbad 5000. IAAF. Retrieved on 2010-04-13.
- Cruz, Dan (2009-07-12). Rotich and Toroitich collect Marathon wins in Las Vegas. IAAF. Retrieved on 2010-04-13.
- Gerweck, Jim (2010-03-22). Americans Deena Kastor Second in Women's Race, Mohamed Trafeh Third Among Men Archived March 25, 2010, at the Wayback Machine.. Run Washington. Retrieved on 2010-04-12.
- Negash, Elshadai (2010-12-04). Daba and Jelila take victory at Ethiopian Clubs XC champs. IAAF. Retrieved on 2010-12-06.
- Daba Bekana. Marathon Info. Retrieved on 2011-01-31.
- Daba breaks Houston record with rainy 2:07:04 run. IAAF (2011-01-31). Retrieved on 2011-01-31.
- Robertson, Dale (2011-01-30). Win, win again for Ethiopia. Houston Chronicle. Retrieved on 2011-01-31.
- 2011 Chicago Marathon results. Chicago Marathon. Retrieved on 2011-10-16.
- Nakamura, Ken (2012-03-04). With fast debut, Ndungu takes Lake Biwa title. IAAF. Retrieved on 2012-04-06.