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Texas → Texas · Interstate 35E (Stemmons Freeway)
The drive from Dallas, Texas, to San Antonio, Texas, covers about 479 km (298 miles) along Interstate 35E (Stemmons Freeway), with an estimated travel time of 4h 34m in normal traffic conditions. Dallas is the North Texas business hub and headquarters of Fortune 500 firms, while San Antonio stands out as the home of the Alamo and seventh-largest US city. Sales reps, consultants, real-estate agents and field service professionals who run this route regularly typically depart at sunrise to clear the urban congestion before rush hour and arrive in time for scheduled morning meetings. It also pays to scout two or three reliable fuel-and-rest stops along the way before departure. Assuming average fuel economy of about 26 mpg on regular unleaded, the trip burns roughly 43.5 liters (11.5 gallons), costing about $40.02 at typical pump prices. For mileage reimbursement, applying the IRS standard mileage rate (2025) of $0.43/km ($0.69/mile) yields a one-way payout of $205.97. Keep the trip log, business purpose, odometer readings, and exact route documented in your Clara receipt for IRS compliance and internal audit defensibility.