Texas → Texas · Interstate 35E (Stemmons Freeway)
What does it actually cost to drive from Dallas, Texas, to San Antonio, Texas? The hard numbers: 479 km (298 miles) of pavement primarily along Interstate 35E (Stemmons Freeway), 4h 34m behind the wheel, and roughly $40.02 in fuel alone — that is 43.5 liters (11.5 gallons) of regular unleaded at a 0.92 USD/liter benchmark. Anyone leaving Dallas, the North Texas business hub and headquarters of Fortune 500 firms, typically carries samples, signed proposals, or service equipment to deliver in San Antonio, the home of the Alamo and seventh-largest US city, and aims to be home the same evening. It is worth confirming whether the haul fits inside your daily hours-of-service window or whether an overnight at a midpoint hotel makes more sense. Applying the IRS standard mileage rate (2025) mileage rate of $0.43/km ($0.69/mile), the gross outbound reimbursement settles at $205.97. Attach the visit purpose, client name, and plate number to the Clara receipt so the journal entry lands directly in the business-travel expense account.