Boone grew up in the Logan Fontenelle housing project and attended Technical High School in North Omaha, Nebraska.

In high school, Boone played basketball for Coach Neal Mosser, who had led Tech to the 1963 State title and had coached Basketball Hall of Famer Bob Boozer and Baseball Hall of Famer Bob Gibson before Boone.

Boone stood only 5'7" when he graduated from high school and didn't become a starter in basketball until his senior season.

If there was anything in my life that I can say inspired me, it was those comments.”[6] After high school, Boone and a teammate accepted offers to play junior college basketball.

Boone played under Idaho State Coach Claude Retherford, as the Bengals finished the season with a 7–19 overall.

[8] As a senior in 1967–1968, Boone averaged 21.3 points, 4.2 rebounds and 3.8 assists as Idaho State finished the season with a record of 10–12, playing under new Coach Danny Miller.

[3] In January 1971, the Stars traded Donnie Freeman and Wayne Hightower to the Chaparrals for Boone and Glen Combs.

[14] Boone, alongside Zelmo Beaty, Willie Wise and Glen Combs, helped lead the Utah Stars to the 1971 ABA championship under Coach Bill Sharman.

Utah finished the 1970–1971 regular season 57–27, with Boone averaging 18.8 points, 5.8 rebounds and 2.6 assists after coming over in the trade from Dallas.

Boone averaged 17.6 points in the ABA Finals 4 games to 3 victory over the Kentucky Colonels, with Dan Issel and Louis Dampier.

[15][16][17][18] Over the course of six seasons with the Utah Stars, Boone averaged 18.6 points, 5.0 rebounds, 3.9 assists and 1.5 steals in 396 games.

[3] Overall, Boone averaged 26.2 points for Utah and 21.0 in 62 games for St. Louis, playing alongside Hall of Famer Moses Malone as well as Marvin Barnes, Maurice Lucas, M.L.

[13] Playing for Coach Phil Johnson in 1976–1977, Boone led the Kings in scoring, averaging 22.2 points, along with 3.9 rebounds, 4.1 assists and 1.5 steals, as the Kansas City finished 40–42.

First, he was traded by the Kansas City Kings with a 1979 2nd round draft pick (Mark Young was later selected) to the Denver Nuggets for Mike Evans and Darnell Hillman.

[3][13] In 1979–1980, Boone averaged 12.9 points under Coach Jazz Tom Nissalke, playing alongside Hall of Famers Adrian Dantley and Pete Maravich.

[24][25] Boone is likely the only player in major professional sports history to have never missed a single game played in his career.

Later on in my career I thought “boy, this is something special.” And then you start taking pride in it, the fact that I’ve never pulled a hamstring or a muscle or a groin.

"[2][6] Boone finished 3rd all-time in American Basketball Association scoring with 12,153 points, behind Dan Issel (12,823) and Louie Dampier (13,726).

[26] In Terry Pluto's book on the history of the ABA, Loose Balls, interviewees noted that Boone's nickname was "The Legend", because he always showed up each season in shape and always was remarkably consistent.

At the time of his retirement, Boone had the distinction of having played the most consecutive games of any player in the history of professional basketball – 1,041 in a row between the ABA and NBA.

[33] JaRon Boone played college basketball at the University of Nebraska from 1992 to 1996, averaging 12.2 points, 2.7 rebounds and 3.5 assists in 127 career games.