Check these quotes out:
“I don’t know why Mo hesitates about his potential in the marathon. He was able to train, decent mileage, track workouts twice per week, every Sunday a long run of 25 miles or more, which is definitely good for a marathon.
“With the right preparation, I’m 100 percent sure he can run fast and be with the fastest guys in the world.
“Now he has time, he takes it very seriously, with eight weeks in the mountains. I don’t know why he hesitated or thinks about stopping, I think if he gives himself time in the next three to four years and he does the necessary workouts for the marathon, I think he can still run fast.
Look at Kipchoge, he’s running world records, age is just a number.”