Career
He competes mainly in the 3000 m steeplechase distance. He also competes in the 2000 m steeplechase, 1500 m, mile, 3000 m, 5000 m, 10000 m and cross-country running. In June 2009, Tahri improved his 2000 m outdoor steeplechase European record with a run of 5:15.36 in Nancy, France.
He set a new 3000 m outdoor steeplechase European record of 8:01.18 in finishing third in the final of the 2009 World Championships in Berlin.
On 25 June 2010, Tahri set a new world record time of 5:13.47 in the 2000m outdoor steeplechase race in Tomblaine, France. The previous world record time of 5:14.43 was set on 21 August 1990 by Julius Kariuki.
But Tahri"s 2000m outdoor steeplechase world record was broken only 5 days later by his compatriot Mahiedine Mekhissi-Benabbad. 2013 European Team Championships - gold medal (3000 m)
2013 European Team Championships - silver medal (5000 m)
2011 World Championships - fourth place
2010 Continental Cup - bronze medal (5000 m)
2010 European Championships - silver medal
2009 World Athletics Final - bronze medal
2009 World Championships - bronze medal
2009 European Indoor Championships - silver medal (3000 m)
2008 World Athletics Final - seventh place
2008 Olympic Games - fifth place
2007 World Athletics Final - fourth place
2007 World Championships - fifth place
2007 European Indoor Championships - silver medal (3000 m)
2007 European Cup - gold medal (3000 m)
2006 IAAF World Cup - bronze medal
2006 World Athletics Final - bronze medal
2006 European Championships - bronze medal
2005 European Cup - silver medal (5000 m)
2005 World Athletics Final - fifth place
2005 World Championships - eighth place
2004 European Cup - gold medal
2004 Olympic Games - seventh place
2003 World Athletics Final - fifth place (3000 m)
2003 World Championships - fourth place
2002 European Cup - gold medal
2002 European Championships - fourth place
2001 European Cup - gold medal
2001 World Championships - fifth place
2001 World Indoor Championships - eleventh place (3000 m)
2000 European Cup - gold medal
1999 World Championships - twelfth place
1998 European Championships - tenth place
1996 World Junior Championships - seventh place.