 Complete the following phrase:  Gathimba emerged at international level in 2014, taking a silver medal at the 2014 African Championships in Athletics behind Lebogang Shange of South Africa. He set a personal best of 1:23:59 hours to place second at the national championships that year, behind David Kimutai Rotich. He topped the podium at the 2015 national trials with a new best of 1:23:12 hours, which ranked him in the worlds top 100 for the first time. He again demonstrated his place among the continents best at the 