An alternative route is to take I-35 South from Dallas to San Antonio, and then take I-10 West to El Paso. This route is approximately 750 miles and will take about 11 hours to drive without stopping. However, this route may be less congested than I-20, so it may be a better option if you are traveling during peak traffic times.
If you are planning a road trip from Dallas to El Paso, it is important to factor in time for rest stops and meals. You should also be aware of the weather conditions and road closures before you begin your trip.