How far is Harper, TX from San Antonio, TX?
The driving distance from Harper, TX to San Antonio, TX is about 91.5 miles (147.3 km), with a travel time of about 01h 28m by car.
- The straight-line flight distance is about 75.4 miles (121.3 km).
- For a round trip, plan for roughly 02h 56m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CST.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 01h 28m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Sense of physical or psychological ease; state of being comfortable and free from stress
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Sunny
Driving Route Map
The map below follows the saved road route between Harper and San Antonio.
Turn-by-Turn Driving Directions
Step-by-step road directions between Harper and San Antonio.
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1
Start on West US Highway 290
1256 ft · 33 sec · West US Highway 290
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2
Turn left onto South Ranch Road 783
14.1 mi · 19 min · South Ranch Road 783
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3
Continue on Harper Road
3.5 mi · 6 min · Harper Road
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4
Take the ramp slight right
1542 ft · 38 sec
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5
Merge slight left
44.6 mi · 45 min
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6
Keep slight right
17.4 mi · 20 min
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7
Keep slight right to continue on McDermott Freeway
1.7 mi · 2 min · McDermott Freeway
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8
Take the exit slight right toward Santa Rosa Street, Downtown
2505 ft · 1 min
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9
Turn straight onto North Pecos-La Trinidad
804 ft · 16 sec · North Pecos-La Trinidad
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10
Keep slight right to continue on North Pecos-La Trinidad
2963 ft · 1 min · North Pecos-La Trinidad
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11
Turn left onto Dolorosa Street
2582 ft · 56 sec · Dolorosa Street
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12
Arrive at your destination
0 m · 1 sec · Dolorosa Street
Car Route Details
A richer read on the saved driving route between Harper and San Antonio.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Harper Road
Merge slight left
44.6 mi · 00h 45m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Mostly Cloudy leaving Harper and Sunny near San Antonio.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Harper to San Antonio?
The road trip is about 91.5 miles (147.3 km) and usually takes 01h 28m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Comfort is a useful midpoint, sitting about 41.8 miles from Harper and 49.8 miles from San Antonio.
How much longer is the road route than the straight-line distance?
The direct path is about 75.4 miles (121.3 km), while the road route adds roughly 16.1 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM CST. If you want a more comfortable same-day return, try to leave by 3:34 PM CST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.57 one way or $23.13 round trip. Estimated CO2 is about 28.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Harper and Sunny near San Antonio.
Stop Ideas Near Comfort
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Comfort.
San Antonio Station
San Marcos Station
Austin
Flight Path Map
This map shows the direct air route between Harper and San Antonio. Straight-line distance: 75.4 mi (121.34 km).
#1 Harper
Harper is a place in Texas, United States.
| Population | 0 |
| Coordinates | 30.2999200, -99.2442100 |
| Altitude | 626 |
| Country | United States |
#2 San Antonio
The seventh most populous city in the United States and the center of the San Antonio metropolitan area.
| Population | 1,567,118 |
| Coordinates | 29.4241200, -98.4936300 |
| Altitude | 198 |
| Country | United States |
End: Dolorosa Street (-98.493645, 29.424163)
Estimated Travel Time
Distance: 147 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 03m |
| 40 mph (64.37 km/h) | 02h 17m |
| 50 mph (80.47 km/h) | 01h 49m |
| 60 mph (96.56 km/h) | 01h 31m |
| 70 mph (112.65 km/h) | 01h 18m |
| 80 mph (129 km/h) | 01h 08m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.58 | $11.57 | $23.13 |
| Mid-grade | $4.09 | $13.22 | $26.45 |
| Premium | $4.47 | $14.44 | $28.89 |
| Diesel | $5.68 | $18.35 | $36.71 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
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