Salt Lake City · the midpoint
Salt Lake City, often shortened to Salt Lake or SLC, is the capital and most populous city of the U.S. state of Utah. It is the county seat of Salt Lake County, the most populous county in the state. Read more →
The fair place to meet is Salt Lake City, UT — the city closest to the midpoint of Portland and San Antonio. From the farther side that’s about 22 hr 48 min of driving.
Recommended midpoint
Salt Lake City, UT
From Portland
13 hr 18 min
635 mi to Salt Lake City
From San Antonio
22 hr 48 min
1,087 mi to Salt Lake City
Portland has the shorter trip; the split is off by about 9 hr 30 min. The alternatives below can even it out. Portland and San Antonio are about 1,718 miles apart.
Portland and San Antonio are about 1,718 miles apart by road. Split the difference and you arrive near Salt Lake City, the city closest to the halfway point between them. That puts roughly 13 hr 18 min of driving on the Portland side and 22 hr 48 min on the San Antonio 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. Salt Lake City still makes a fair, central place for Portland and San Antonio to converge, splitting the travel instead of asking one side to cross the country.
If Salt Lake City doesn't have what you're after, Las Vegas and Albuquerque are also close to the midpoint and worth a look — each keeps the drive reasonably balanced between Portland and San Antonio.
Salt Lake City, often shortened to Salt Lake or SLC, is the capital and most populous city of the U.S. state of Utah. It is the county seat of Salt Lake County, the most populous county in the state. Read more →
Portland is the most populous city in the U.S. state of Oregon. Located in the Pacific Northwest at the confluence of the Willamette and Columbia rivers, it is the 28th-most populous city in the United States, sixth-most populous on the West Coast, and… Read more →
San Antonio is a city in the U.S. state of Texas. It is the seventh-most populous city in the United States, the second-most populous city in Texas, and the second-most populous city in the Southern U.S., with a population of 1.43 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.