Joan Benoit Samuelson (illness) may change Chicago Marathon plan

Joan Benoit Samuelson may abandon the goal of running within 30 minutes of her winning time from 30 years ago due to a stomach virus.

Former American marathon record holder Joan Benoit Samuelson may miss the 2015 Chicago Marathon on Sunday due to a stomach virus, according to The Chicago Tribune's Philip Hersh. 

The 2015 edition of the race comes 30 years after Samuelson broke the tape in 2:21:21 for the victory and a new American record in 1985. It was her first marathon since winning gold in the first Olympic women's marathon the previous summer in Los Angeles. 

• CHAVEZ: Joan Benoit Samuelson reflects on 1985 Chicago Marathon win

Samuelson, 58, was hoping to run within 30 minutes of her winning time. The goal may be abandoned if she decides to race. 

Samuelson ran April's Boston Marathon and finished in 2:54:03 for a respectable 67th place among female competitors.

- Christopher Chavez