Simple past tense and past participle of bike.(verb)
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Use "biked" in a sentence
"President Bush recalls that he mountain biked with the Chinese mountain biking team, the Olympic team."
"On Easter Sunday we bused to Newala and spent a whirlwind 5 days there - we explored my town, checked out my projects, went running with the Kilimanjaro Kids, and mountain biked our way through the bush to find a few worthy recipients of the many gifts that Katie and Brad bought."
"I really need to be given some sort of medal), I got on the stationary bike, which, for whatever reason was super comfy on my feet and I "biked" about 13 miles and felt frigging fantastic afterward."