In March, aged 15, the Tauranga Boys’ College student became the youngest person to run a sub-four-minute mile, becoming the 49th New Zealander to break the milestone target in Auckland, in 3min 58.35sec.
In July, Ruthe lowered his own national under-17 and under-18 1500m records with his performance during the Sound Running Sunset Tour in Los Angeles.
The 1500m final is scheduled to run at 2pm on Sunday.
Ruthe has also qualified for the 800m final, which takes place earlier at 9:52am.
The Herald has approached Ruthe for comment.