Texas → Arizona · Interstate 10
The drive from El Paso, Texas, to Phoenix, Arizona, covers about 656 km (408 miles) along Interstate 10, with an estimated travel time of 6h 15m in normal traffic conditions. El Paso is the far-west Texas border city across from Ciudad Juárez and a major Sun Belt logistics hub, while Phoenix stands out as the fifth-largest US city and capital of Arizona. 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 59.6 liters (15.7 gallons), costing about $54.83 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 $282.08. Keep the trip log, business purpose, odometer readings, and exact route documented in your Clara receipt for IRS compliance and internal audit defensibility.