Pavey, 34, from Teddington, will be competing in her third Olympics after finishing fourth in the 5,000m in Athens.
She will compete in that event again but the 10,000m looks like being her priority in Beijing.
"It'll be tough but I will do everything to achieve my goal," she said.
The women's 10,000m final starts on 15 August at 1545 BST.
The first round of the women's 5,000m takes place on 19 August, with the final three days later, starting at 1340 BST.
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