 It was not uncommon for a clipper to sail over 300 miles a day; the Flying Cloud (clipper) on a ninety-day run to San Francisco made 374 miles in one day.The Comet (clipper), on an eighty-day voyage from San Francisco to New York averaged 210 miles a day.It appeared that the American ship builder, before he relinquished his supremacy, was intent upon demonstrating to what heights of efficiency and speed a sailing ship could attain.