The fair place to meet is Albuquerque, NM — the city closest to the midpoint of Boise and Houston. From the farther side that’s about 16 hr 19 min of driving.
Recommended midpoint
Albuquerque, NM
From Boise
16 hr 19 min
779 mi to Albuquerque
From Houston
15 hr 47 min
753 mi to Albuquerque
Houston has the shorter trip; the split is off by about 32 min. The alternatives below can even it out. Boise and Houston are about 1,492 miles apart.
Boise and Houston are about 1,492 miles apart by road. Split the difference and you arrive near Albuquerque, the city closest to the halfway point between them. That puts roughly 16 hr 19 min of driving on the Boise side and 15 hr 47 min on the Houston side — the fairest single meeting point among the cities near the middle.
Over this distance most people will fly rather than drive the whole way. Albuquerque still makes a fair, central place for Boise and Houston to converge, splitting the travel instead of asking one side to cross the country.
If Albuquerque doesn't have what you're after, Denver and El Paso are also close to the midpoint and worth a look — each keeps the drive reasonably balanced between Boise and Houston.
Albuquerque is the most populous city in the U.S. state of New Mexico. Founded in 1706 as La Villa de Alburquerque by Santa Fe de Nuevo México governor Francisco Cuervo y Valdés, and named in honor of Francisco Fernández de la Cueva, 10th Duke of Alburquerque… Read more →
Boise is the capital and most populous city in the U.S. state of Idaho. It is the county seat of Ada County. The population of the city was 235,685 at the 2020 census. Read more →
Houston is the most populous city in the U.S. state of Texas and the Southern United States. It is the fourth-most populous city in the United States, with a population of 2.3 million at the 2020 census. Read more →
City descriptions adapted from Wikipedia (CC BY-SA); photos via Wikimedia Commons, credited above.
Estimates use straight-line distance and typical road speeds; real drive times vary with route and traffic.