Former world record holder Paula Radcliffe says her “body is done” with road racing.

The 51-year-old secured the Six Star Medal – which is awarded to runners who complete all six of the world marathon majors – by completing the Boston Marathon on Monday.

The mum-of-two, who retired in 2015, finished Boston with a time of 2 hours 53 minutes and 44 seconds.

Writing on Instagram after the race, Radcliffe says she injured her calf at the nine-mile mark and that the race was the perfect way to “sign out” from road racing.

“Wow, thank you Boston,” wrote Radcliffe.

“My calf went at 9 miles and I couldn’t go full out from then on, but on the plus side the foot is great and I got to savour and enjoy those Boston Marathon crowds.

“That’s me signing out on the roads now! Lesson learned that my body is done with that.”