In 2019 Musobo ran the International Marathon, Daegu, where he placed 3rd in a new personal best time of 2:06:56. In 2019, he represented Uganda in the men's marathon at the 2019 World Athletics Championships held in Doha, Qatar. He finished in 13th place. The race was won by Ethiopia's Lelisa Desisa. In November Musobo competed in his third marathon of the year placing 2nd at the MTN Kampala Marathon in 2:15:23.