Joan Benoit Samuelson, 61, to attempt sub-3 at Chicago

If successful, the previous Chicago course record-holder and 1984 Olympic champion would make history as the first woman over 60 to go sub-3

Age grading: how masters runners level the playing field

Age grading gives us a way to appreciate just how good the extraordinary performances by seniors really are

96-year-old fails to break 95+ age-group record in the 800m

Fremont unable to repeat his earlier success in the mile, but reports a “marvellous experience” nonetheless