Moon umbra hits Mexican coast at 12:07 p.m. Mexican Pacific Daylight Time less than 12 miles (19 km) southeast of Mazatlán, a popular solar eclipse watching spot.
Nazas receives the umbra at 1:15 p.m. KCDT. The hamlet of 4,000 will see its population grow because it is closest to the longest totality. The community will enjoy that time, but it will be 3 miles (5 km) north of Durango Paso Nacional
Piedras Negras, Texas, is a sizable city across the Rio Grande River from Eagle Pass. For the maximum duration of totality (4 minutes 28 seconds), Americans must pass the Eagle Pass Piedras Negras International Bridge
Radar Base, on the U.S. Mexico border, offers the most totality without leaving the U.S. Note that its name is not a military base but a little village of several hundred people.
Most eclipse chasers will head to the center line for an extra minute of umbral darkness, even though San Antonio will be their base. Kerrville, with 24,000 population, is the largest of several minor communities along the trail.
Travelers often base in Austin, Texas' state capital. It's an excellent pick because the city has many cuisine and music options. Unfortunately, it is approaching the southern totality limit.