Utah → Colorado · Interstate 15 / Interstate 80
Before turning the key for Denver, Colorado, on the homeward run from Salt Lake City, Utah, do a quick inventory sweep of onboard equipment: proposal binder, undelivered promotional items, and visitor badge should each go into a separate compartment so nothing slides into the footwell during a sharp brake. Interstate 15 / Interstate 80 accepts the 704 km (437 miles) of the return in roughly 6h 42m. Pulling out of Salt Lake City (the capital of Utah and the gateway to the Wasatch Range and the Great Basin), the road eventually puts the driver back in front of the urban skyline of Denver (the Mile-High City and economic center of the Rocky Mountain region). Refueling sits near $58.88 for the same 64 liters (16.9 gallons) at the EIA national average benchmark. Return reimbursement, calculated against $0.43/km, returns $302.72 into the driver's wallet. Snap the closing odometer with the phone camera and attach it directly to the Clara receipt — internal controls accept photographic evidence without a supplementary spreadsheet.