How far is San Marcos, CA from Glen Rose, TX?
The driving distance from San Marcos, CA to Glen Rose, TX is about 1328.1 miles (2137.3 km), with a travel time of about 23h 03m by car.
- The straight-line flight distance is about 1128.8 miles (1816.7 km).
- For a round trip, plan for roughly 46h 06m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM PDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
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 23h 03m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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.
City in Doña Ana County, New Mexico, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Sunny then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between San Marcos and Glen Rose.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Marcos and Glen Rose.
-
1
Start on Pico Avenue
922 ft · 35 sec · Pico Avenue
-
2
Turn left onto West San Marcos Boulevard
132 m · 19 sec · West San Marcos Boulevard
-
3
Turn right onto North Twin Oaks Valley Road
1640 ft · 44 sec · North Twin Oaks Valley Road
-
4
Take the ramp left toward CA 78 East
1201 ft · 31 sec
-
5
Merge slight left onto Ronald Packard Parkway
3 mi · 3 min · Ronald Packard Parkway
-
6
Take the exit slight right toward I 15 South: San Diego
1.1 km · 1 min
-
7
Merge slight left onto Escondido Freeway
1010 ft · 13 sec · Escondido Freeway
-
8
Keep slight right to continue on Escondido Freeway
8.7 mi · 10 min · Escondido Freeway
-
9
Take the exit slight right toward Camino Del Norte
1341 ft · 35 sec
-
10
Turn left onto Camino del Norte
1.6 mi · 3 min · Camino del Norte
-
11
Continue on Twin Peaks Road
2.6 mi · 5 min · Twin Peaks Road
-
12
Turn right onto Espola Road
1.3 km · 1 min · Espola Road
-
13
At the end of the road, turn left onto Poway Road
2.6 mi · 4 min · Poway Road
-
14
Turn right
9.2 mi · 13 min
-
15
Turn left onto Mapleview Street
1.2 km · 2 min · Mapleview Street
-
16
Continue on Lake Jennings Park Road
2.4 mi · 4 min · Lake Jennings Park Road
-
17
Take the ramp straight toward I 8 East: El Centro
1409 ft · 34 sec
-
18
Merge slight left onto Kumeyaay Highway
148.1 mi · 2 hr 40 min · Kumeyaay Highway
-
19
Continue on Blue Star Memorial Highway
177.9 mi · 3 hr 3 min · Blue Star Memorial Highway
-
20
Keep slight right to continue on I 10 East: Tucson
2912 ft · 38 sec
-
21
Continue on Phoenix Bypass Route
2090 ft · 28 sec · Phoenix Bypass Route
-
22
Continue on Casa Grande-Tucson Highway
54.6 mi · 56 min · Casa Grande-Tucson Highway
-
23
Continue on North Freeway
6.1 mi · 7 min · North Freeway
-
24
Continue on Tucson-Benson Highway
42.9 mi · 45 min · Tucson-Benson Highway
-
25
Continue on Benson-Steins Pass Highway
88.3 mi · 1 hr 28 min · Benson-Steins Pass Highway
-
26
Continue on Pearl Harbor Memorial Highway
164.3 mi · 2 hr 48 min · Pearl Harbor Memorial Highway
-
27
Continue on Camino Real de Tierra Adentro
12 mi · 14 min · Camino Real de Tierra Adentro
-
28
Continue straight
174.8 mi · 2 hr 53 min
-
29
Keep slight left
369.9 mi · 6 hr 6 min
-
30
Take the exit slight right toward SH 108 South, FM 919: Gordon, Stephenville
742 ft · 16 sec
-
31
Turn straight onto West Interstate 20
1003 ft · 30 sec · West Interstate 20
-
32
Turn right onto State Highway 108
22.2 mi · 33 min · State Highway 108
-
33
Continue on North Graham Street
1.7 mi · 4 min · North Graham Street
-
34
Continue on South Graham Avenue
1933 ft · 48 sec · South Graham Avenue
-
35
Turn left onto East South Loop
1184 ft · 16 sec · East South Loop
-
36
Turn right onto Glen Rose Road
2221 ft · 31 sec · Glen Rose Road
-
37
Continue on US Highway 67
28.6 mi · 33 min · US Highway 67
-
38
Turn right onto Hereford Street
1794 ft · 36 sec · Hereford Street
-
39
Turn left onto Southwest Barnard Street
664 ft · 17 sec · Southwest Barnard Street
-
40
Turn right onto East Elm Street
20 m · 1 sec · East Elm Street
-
41
Arrive at your destination
0 m · 1 sec · East Elm Street
Car Route Details
A richer read on the saved driving route between San Marcos and Glen Rose.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Camino Real de Tierra Adentro
Keep slight left
370 mi · 06h 06m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Partly Sunny leaving San Marcos and Sunny then Chance Showers And Thunderstorms near Glen Rose.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Marcos to Glen Rose?
The road trip is about 1328.1 miles (2137.3 km) and usually takes 23h 03m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Radium Springs is a useful midpoint, sitting about 663.4 miles from San Marcos and 664.7 miles from Glen Rose.
How much longer is the road route than the straight-line distance?
The direct path is about 1128.8 miles (1816.7 km), while the road route adds roughly 199.3 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 6:00 AM to 7:30 AM PDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $270.34 one way or $540.67 round trip. Estimated CO2 is about 416.4 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 2 hour time difference between San Marcos and Glen Rose, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Partly Sunny around San Marcos and Sunny then Chance Showers And Thunderstorms near Glen Rose.
Stop Ideas Near Radium Springs
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 Radium Springs.
Las Cruces, New Mexico
Truth or Consequences, New Mexico
Deming station
El Paso (Bus Station), Texas
Flight Path Map
This map shows the direct air route between San Marcos and Glen Rose. Straight-line distance: 1128.88 mi (1816.75 km).
#1 San Marcos
The second most populous city in San Diego County, California.
| Population | 97,477 |
| Coordinates | 33.1433700, -117.1661400 |
| Altitude | 177 |
| Country | United States |
#2 Glen Rose
City in Somervell County, Texas, United States
| Population | 2,736 |
| Coordinates | 32.2345900, -97.7553100 |
| Altitude | 189 |
| Country | United States |
End: Glen Rose (-97.75531, 32.23459)
Estimated Travel Time
Distance: 2137 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 44h 15m |
| 40 mph (64.37 km/h) | 33h 12m |
| 50 mph (80.47 km/h) | 26h 33m |
| 60 mph (96.56 km/h) | 22h 08m |
| 70 mph (112.65 km/h) | 18h 58m |
| 80 mph (129 km/h) | 16h 34m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $270.34 | $540.67 |
| Mid-grade | $6.07 | $284.25 | $568.51 |
| Premium | $6.24 | $292.55 | $585.09 |
| Diesel | $7.57 | $354.59 | $709.18 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in California · Jul 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.