WICHITA, Kan. (AP) — Kansas native Jim Ryun is noting the 50th anniversary of the race that made him the first high school student to run a mile under 4 minutes.

Ryun was a 17-year-old junior at East High School in Wichita competing against older runners on June 5, 1964 at the Compton Invitational near Los Angeles. He ran the mile in 3 minutes, 59 seconds.

He was bumped during the race and finished eighth but it began a career in which Ryun went on to set world records and compete in the Olympics.

Only five high school runners have broken 4 minutes since then. Ryan did it three times.

The Wichita Eagle reports Ryun will be at San Diego’s Balboa Stadium Thursday evening, where the milestone will be honored.