San Antonio to Corpus Christi distance
San Antonio and Corpus Christi are 130 miles (210 km) apart in a straight line and 143 miles (231 km) apart by road: about 2 hr 30 min of driving without stops, mostly on I-37. Below you’ll find the route map, both halfway points, the bearing and where every figure comes from.
By the All Map Tools Team
- By road
- 143 mi (231 km)
- Driving time
- 2 hr 30 min
- Straight line
- 130 mi (210 km)
- Driving route
- Straight line
- Straight-line midpoint
- Halfway by road
Lambert azimuthal equal-area projection centered on the midpoint. Route: FOSSGIS OSRM with data © OpenStreetMap contributors, calculated on November 1, 2026; simplified line.
The figures
| Figure | Value |
|---|---|
| Straight line | 130 mi (210 km) geodesic on the WGS84 ellipsoid |
| By road | 143 mi (231 km) fastest driving route (OSRM) |
| Driving time | 2 hr 30 min no stops, no traffic |
| Road detour | +10% 1.10 times the straight line |
| Average speed | 58 mph (94 km/h) along the route, without stops |
| Bearing | 149° (southeast) leaving San Antonio toward Corpus Christi |
| Midpoint | 28.6135° N, 97.9408° W near Pawnee (Texas) |
| Halfway by road | Near Pawnee (Texas) 71.6 mi from each city by road |
| Time difference | None both share the same time |
| Elevation | San Antonio: 649 ft (198 m) · Corpus Christi: 7 ft (2 m) USGS 3DEP |
| Population | San Antonio: 1,548,422 · Corpus Christi: 317,247 Census Bureau estimate for 2025 |
San Antonio to Corpus Christi by road
The fastest driving route is 143 miles (231 km) long and takes about 2 hr 30 min without stops or traffic. Almost all of it is on I-37: 142 mi of 143 mi.
The whole route stays in Texas. That’s an average of 58 mph (94 km/h). AAA recommends a break every two hours or 100 miles: with 1 stop of 20 minutes, the trip takes about 2 hr 50 min. The time is OSRM’s estimate with OpenStreetMap data: no traffic and speeds somewhat below the limits, so real trips can differ.
Straight-line distance and bearing
In a straight line, the shortest distance over the Earth’s surface, San Antonio and Corpus Christi are 130 miles (210 km) apart. That’s the geodesic on the WGS84 ellipsoid, the distance “as the crow flies”.
The road is 10% longer: for every 100 miles in a straight line you drive 110. The route runs almost straight. Of the 110 US driving pairs in this series, it ranks 80th for detour (the average is 16%).
From San Antonio, Corpus Christi lies to the southeast (bearing 149°), and from Corpus Christi, San Antonio lies to the northwest.
Halfway between San Antonio and Corpus Christi
Halfway along the straight line, 65.1 miles (105 km) from each city, is the point 28.6135° N, 97.9408° W. It falls near Pawnee (Texas, pop. 81), 4.7 mi away.
By road, the halfway point is 71.6 miles (115 km) from each city, near Pawnee (Texas, pop. 81), 13.6 mi away. The two midpoints are 15.5 mi apart: if you want to meet halfway, the one on the road is the useful one.
Time zone and flight
San Antonio and Corpus Christi share the same time all year: both are on Central Time.
No flight time is given: under 500 km (311 miles) in a straight line, time at the airport outweighs time in the air.
The two cities
San Antonio sits at 649 ft (198 m) and Corpus Christi at 7 ft (2 m), 642 ft (196 m) lower.
San Antonio has 1.5 million people and Corpus Christi 317,247 people (Census Bureau estimate for 2025).
Frequently asked questions
How many miles is it from San Antonio to Corpus Christi?
130 miles (210 km) in a straight line and 143 miles (231 km) by road on the fastest route (mostly on I-37).
How long is the drive from San Antonio to Corpus Christi?
About 2 hr 30 min without stops or traffic, according to OSRM with OpenStreetMap data; with 1 stop of 20 minutes, about 2 hr 50 min.
Where is the halfway point between San Antonio and Corpus Christi?
In a straight line, near Pawnee (Texas). By road, 71.6 mi from each city, near Pawnee (Texas).
Are San Antonio and Corpus Christi in the same time zone?
Yes: both are on Central Time all year.
Which city is higher, San Antonio or Corpus Christi?
San Antonio, at 649 ft (198 m); Corpus Christi sits at 7 ft (2 m).
Measure it yourself on the map
The same two cities, already set up in the tools: move the points, get the route by bike or on foot and download the map.
- Distance between two points Measure the distance between any two places or points on the map, in miles or kilometers.
- Straight line vs driving distance Compare the as-the-crow-flies distance with the real driving distance and see how much the road adds.
- Halfway point Find the exact halfway point between two places and see it on the map, ready to share.
More distances from San Antonio
All distances- San Antonio to Monterrey 281 mi straight line · 294 mi by road · 5 hr 25 min
- Dallas to San Antonio 252 mi straight line · 273 mi by road · 4 hr 55 min
- Houston to San Antonio 190 mi straight line · 195 mi by road · 3 hr 30 min
- Austin to San Antonio 73.5 mi straight line · 79.2 mi by road · 1 hr 30 min
More distances from Corpus Christi
Sources
- Driving route: FOSSGIS OSRM, car profile (calculated on November 1, 2026) · FOSSGIS e.V.
- Roads, streets and places · © OpenStreetMap contributors (ODbL)
- Straight line, bearings and midpoint (geodesics on the WGS84 ellipsoid) · GeographicLib (C. F. F. Karney)
- US city centers (GNIS) and their elevation (3DEP) · USGS (public domain)
- Population estimates, Vintage 2025 · US Census Bureau (public domain)
- Places near the midpoints: All Map Tools gazetteer (GeoNames, INE, IGN and Census) · All Map Tools
- Time zones (timezone-boundary-builder outlines and the IANA database) · © OpenStreetMap contributors (ODbL)
- Map: provinces (IGN), states (US Census Bureau) and countries (Natural Earth) · IGN, Census and Natural Earth
- Methodology