89-year-old man running
Athlete Ian Barnes, 89, holds three British running records for his age group.
  • Ian Barnes, turning 90 in December, holds three British records in the over-85s category for running.
  • The grandfather of two completed one mile in just eight minutes and 10 seconds.
  • His secrets include training five days a week, eating a healthy diet, and having a positive outlook.

When he was 21, Ian Barnes shared the world's astonishment when the legendary British athlete Roger Bannister broke the four-minute mile in 1954.

"I suppose he's my hero," Barnes told Business Insider.

Bannister's accomplishment inspired him to take up competitive running — a sport at which he still excels at 89.