Jacobs took second place in the 1500 m race at the6th World Championships in Athletics inAthens (4:04.63) in 1997, and again won the silver medal in the 1500 m at the World Championships inSevilla in 1999 (4:00.35). In her years of running she won 25 national titles. On February 1, 2003, Jacobs set a world record in the indoor 1500 m with a time of 3:59.98, becoming the first woman to break 4 minutes in the event. Months later, she was officially banned for doping but her American record technically stood until March 2, 2025, whenHeather MacLean ran 3:59.60 to set a new American record.[4][5]
In her final years of competition, she was coached by her husband, Tom Craig.[6]
In 2003, she retired after she tested positive forBALCO's 'designer' steroidTHG and was suspended from competing in track & field for four years by theUnited States Anti-Doping Agency.
Following her ban and subsequent retirement, Jacobs became a real estate agent in theOakland, California, area. She earned an MBA from theUniversity of California, Berkeley. She currently works for The Grubb Co. Realtors, with her husband on her team.[6]
*Distances have varied as follows: Mile (1967–2002), except 1997 and 1999, 2007 and odd numbered years since 2011, 1500 meters 1997, 1999, (2003–6, 2008–2010) and even numbered years since 2010