He was a cross country runner earlier in his career and represented his country at the 2004 IAAF World Cross Country Championships. His main focus became road running and he began to compete over the shorter road distances in 2006. At the 2006 Lille Half Marathon, he was runner-up behind Joseph Maregu by one second, setting a personal best run of 1:01:21.AIMS Statistics 2006. AIMS (2006). Retrieved on 2010-10-18. Falil took part in the Paris Half Marathon in March 2007 and he finished fourth with an improved time of 1:00:43, while Maregu again took the top honours.The first 100 men in the Semi-Marathon de Paris 2007. Semi-Marathon de Paris. Retrieved on 2010-10-18. He won the Corrida de Langueux that year with a course record time of 27:56,Vazel, Pierre-Jean (2010-06-28). A. Bekele and Wangary take Langueux 10Km titles. IAAF. Retrieved on 2010-06-29. which was also a Moroccan record for the 10K distance.
