His high school coach was certainly prescient in this interview from USA Today in 2016:
"Manual coach Tim Holman says: He doesn’t really have any fear. A lot of kids are scared. They get to that point of pain in a race, where it really hurts and they back off, and he’s always been one of those kids that just fights through. When he finishes a race you don’t have any doubt he’s given you everything he has that day. And that’s just an innate sense of guts that he has. Obviously he’s got some real natural talent and just has a real gift, but that combination is amazing. Once he learns more about race strategy and pacing, he’s developed a lot over the last three years, but he will definitely flourish at the collegiate level because he’s still relatively new to the sport, which is scary."