Utah → California · Interstate 15 / Interstate 80
Tackling the 1192 km (741 miles) that separate Salt Lake City, Utah, from San Diego, California, in a single push demands long-haul planning: 11h 21m behind the wheel along Interstate 15 / Interstate 80 exceeds the safe ceiling on continuous driving. Schedule a midpoint overnight, driver swap (where applicable) and a mandatory pre-trip inspection. Pulling out of Salt Lake City (the capital of Utah and the gateway to the Wasatch Range and the Great Basin) toward San Diego (the southern California port city on the Mexican border), total fuel use reaches 108.4 liters (28.6 gallons) of regular unleaded (about $99.73), on top of consecutive tolls and a probable hotel night. Gross outbound reimbursement, against the IRS standard mileage rate (2025) schedule of $0.43/km, lands at $512.56. Capture lodging and meals in separate fields of the Clara receipt so they don't get tangled with the pure mileage calculation. The typical corporate policy authorizes a hotel per-diem up to a certain ceiling and meals with a limit per occurrence, amounts that must be substantiated with a fiscal invoice in the contributor's or the company's name. Confirm before the trip the prevailing ceiling per the internal HR table, and verify that the chosen hotel issues an invoice in the format the corporate fiscal system accepts, avoiding later disallowance of the amount.