 Although he persisted in keeping to his agreement with the Post Office, he saw that the schedule was difficult to meet, and that their chosen route along the California Trail was difficult to follow, especially in winter.Chorpenning renewed his mail contract in 1854, but switched the route to an all-season road from Salt Lake City southwest to San Diego, California, and from there by ship to San Francisco, California.In 1858 he received a third government contract, this time for twice-monthly service and including stagecoach (passenger) service.