Given Britain's disappointing results in Paris, the Bedford athlete could be forgiven for feeling extra pressure as the country's main hope for an Olympic gold medal.
But Radcliffe said: "I don't think there is added pressure. You are more responsible to yourself to do yourself justice. I felt a little bit guilty not being in Paris. It was very hard. But I will be fired up a bit more."
Radcliffe has not decided yet whether she will compete in the track races or in the marathon in Athens. But she added: "It is looking more like the marathon but I won't make a decision until nearer the time. The Olympic marathon is going to be something special on the course where it began."