Radcliffe, 28, clocked what was then the second fastest time ever in her marathon debut in London last April, leading from start to finish to win in two hours 18 minutes 56 seconds.

"I just decided this morning that I will be running the London marathon next year," Radcliffe told the BBC's sports personality of the year award programme.

"It set me up really well for the year last year. My main goal for next year will be the London marathon, then the 10,000 metres at the world championships in Paris. It's still a major aim to win a (world) gold on the track."

After her success in London, Radcliffe went on to win the Commonwealth 5,000 title in Manchester and then set a European record in the final of the European championships 10,000 metres in Munich.

At the climax of a year, in which the Briton also successfully defended her world cross country long distance title in Dublin, Radcliffe took 89 seconds off the world marathon record with a time of 2:17:18 in Chicago.

Radcliffe is favourite to win the BBC's sports personality of the year award, which is decided later on Sunday.