Thirty years after setting American marathon record, Joan Benoit Samuelson reflects on her future and her past

Until a recent illness, Joan Benoit Samuelson was hopeful of running within 30 minutes of her American-record time in the Chicago Marathon, set in 1985. But Samuelson, 58, still has plenty of goals left in running. My story for ESPN Endurance: http://espn.go.com/sports/endurance/story/_/id/13780755/endurance-sports-joan-benoit-samuelson-remains-vital-running-world