(CNN) - We're learning more about Mitt Romney's quick trip to Iowa next month.

The former Massachusetts governor and 2012 GOP presidential candidate makes his second visit to the first-in-the-nation caucus state on Thursday August 11. Romney, who's making his second bid for the White House, makes a swing through the Iowa State Fair in Des Moines, a must stop for anyone running for president. A source with knowledge of Romney's schedule confirmed the timing to CNN.

Later that day Romney drives about 40 minutes north on I-35 to Ames, Iowa, to take part in a Republican presidential debate that night. But Romney leaves Ames well before Saturday's crucial straw poll, which he's skipping.