PAULA RADCLIFFE has retired from road racing after securing the Six Star Medal upon completing the Boston Marathon.

Radcliffe, 51, finished Monday’s race with a time of 2 hours 53 minutes 44 seconds, placing her 117th out of 12,447 women that took part.

The four-time British Olympian received the Six Star Medal given to runners who complete all six world marathon majors — Tokyo, Boston, London, Berlin, Chicago and New York City — and then announced it would be her final event on the road.

Writing on Instagram, Radcliffe said: “Wow, thank you Boston. My calf went at nine 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.

“Pain was so worth it for that Six Star Medal, especially getting from one of my biggest idols in Joanie [1984 Olympic marathon champion Joan Benoit Samuelson]. And apart from the calves I feel good afterwards.

“More memories completed and that symmetry from March 1992 WXC [Junior World Cross Country Championships] to today is complete.

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