Born in Keota, Oklahoma.

Migrated to California's San Joaquin Valley and city of Tulare.

Enters Tulare Union High School.

While a sophomore at Tulare Union High School, begins participating in football and track.
Wins first medal ever in track; bronze medal.

CIF-State Track Field Championships meet does not include discus event.
Graduates from Tulare Union High School, along with friend and teammate Bob Mathias.
Competes in Olympic Trials for Discus on 18th birthday, placing 6th.
Sim Iness Scholarship Fund established by Tulare Elks Club, for Sim to be able to go to college.
Enters Compton Junior College, participating in football and track.
Enters Naval Reserves as Seaman Recruit.
Compton J.C. plays in and wins Junior Rose Bowl, after the first unbeaten, untied season in Compton J.C. history.

Marries Jeane Andrews.
Enters University of Southern California, participating in track.

First child, daughter Marlene, is born.

Temporarily drops out of USC in order to support his family.

Returns to USC.
U.S. Olympic Week declared throughout United States by President Truman, May 18-25th.
Competes in Olympic Trials for Discus, placing 1st.
Wins gold medal at XV Olympiad, Helsinki, Finland, setting the Olympic record, and starting the longest USA winning streak in Discus in Olympic history. 
Competes in post-Olympic AAU tour in Europe.
Briefly participates in football at USC; quits due to injury

Appears in Rose Bowl Parade on Tulare, CA float "Hail Our Conquering Heroes", alongside friend Bob Mathias.
Sets Discus World Record, being the first man to break the 190' barrier.
Competes in AAU tour of Scandinavia.
Competes in last collegiate track season at USC.
Honorably discharged from Naval Reserves with rank of Seaman Recruit.

Appears in movie "Lady Godiva".
Appears in movie "Sign of the Pagan".
Graduates from USC with BA in Education.

Bows out of movie "The Harder They Fall"due to teaching commitment.
Moves to Porterville, California to begin teaching and coaching football at
Porterville High School.
Retires from discus competition.

Daughter Marilynn is born.

Sim and wife Jeane divorce.

Participates in Olympic Torch Run, alongside friend and teammate Bob Mathias in Tulare, for the 1960 Squaw Valley Winter Olympics.

Marries Dolores Hutchinson

Son Dan is born.

Son Joe is born

Moves to Porterville College, teaching, academic advising, and coaching football and track.

Retires from coaching.

Retires from teaching.
"Sim Iness Gymnasium" dedicated at Tulare Union High School.
'Sim Iness Day' declared in city of Tulare, October 21st.

Passes away at the age of 65 in Porterville, California.