NEWCASTLE (GBR): Olympic 5000m champion Vivian Cheruiyot is likely to make her marathon debut next year, informs Athletics Weekly. "My future is road racing now. I will probably do the marathon next year but I don't know which I'll do. But I'm still going to run the 10,000m," she said. Cheruiyot is also hoping to defend her world 10,000m title in London next summer.