How far is San Marcos, TX from Frisco, TX?
The driving distance from San Marcos, TX to Frisco, TX is about 264.4 miles (425.5 km), with a travel time of about 03h 53m by car.
- The straight-line flight distance is about 235.1 miles (378.4 km).
- For a round trip, plan for roughly 07h 46m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
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 03h 53m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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 Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between San Marcos and Frisco.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Marcos and Frisco.
-
1
Start on North Guadalupe Street
23 m · 9 sec · North Guadalupe Street
-
2
Turn left onto East Hopkins Street
1.1 mi · 2 min · East Hopkins Street
-
3
Turn slight left
1141 ft · 49 sec
-
4
Turn straight onto North Interstate 35
3027 ft · 1 min · North Interstate 35
-
5
Take the ramp slight left toward I 35 North
1503 ft · 37 sec
-
6
Merge slight left onto Purple Heart Trail
29.1 mi · 32 min · Purple Heart Trail
-
7
Keep slight right to continue on Purple Heart Trail
95.6 mi · 1 hr 40 min · Purple Heart Trail
-
8
Continue on South Jack Kultgen Expressway
6.6 mi · 8 min · South Jack Kultgen Expressway
-
9
Continue on Purple Heart Trail
33 mi · 33 min · Purple Heart Trail
-
10
Keep slight right to continue on I 35E: Dallas
59.2 mi · 1 hr 2 min
-
11
Take the exit slight right toward Oak Lawn Avenue
125 m · 8 sec
-
12
Keep slight right
143 m · 10 sec
-
13
Turn right onto Oak Lawn Avenue
1319 ft · 31 sec · Oak Lawn Avenue
-
14
Take the ramp slight left toward DNT North
1081 ft · 28 sec
-
15
Merge slight left onto Dallas North Tollway
22.5 mi · 25 min · Dallas North Tollway
-
16
Take the exit slight right toward Stonebrook Parkway
1389 ft · 27 sec
-
17
Turn straight onto Dallas Parkway
1037 ft · 22 sec · Dallas Parkway
-
18
Turn right onto Stonebrook Parkway
1218 ft · 28 sec · Stonebrook Parkway
-
19
Turn left onto Parkwood Boulevard
1.6 km · 2 min · Parkwood Boulevard
-
20
Continue on 5th Street
1075 ft · 35 sec · 5th Street
-
21
Turn right onto Elm Street
108 m · 21 sec · Elm Street
-
22
Turn left onto 6th Street
105 m · 15 sec · 6th Street
-
23
Turn left onto Main Street
94 m · 15 sec · Main Street
-
24
Arrive at your destination
0 m · 1 sec · Main Street
Car Route Details
A richer read on the saved driving route between San Marcos and Frisco.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Purple Heart Trail
Keep slight right to continue on Purple Heart Trail
95.6 mi · 01h 40m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Partly Sunny leaving San Marcos and Partly Sunny near Frisco.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Marcos to Frisco?
The road trip is about 264.4 miles (425.5 km) and usually takes 03h 53m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Hewitt is a useful midpoint, sitting about 125.8 miles from San Marcos and 138.6 miles from Frisco.
How much longer is the road route than the straight-line distance?
The direct path is about 235.1 miles (378.4 km), while the road route adds roughly 29.3 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 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 9:14 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $35.26 one way or $70.52 round trip. Estimated CO2 is about 82.9 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around San Marcos and Partly Sunny near Frisco.
Stop Ideas Near Hewitt
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Riesel City Hall
Waco City Hall
Robinson City Police Department
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Hewitt.
Waco, TX
McGregor
Temple
Killeen, Texas
Flight Path Map
This map shows the direct air route between San Marcos and Frisco. Straight-line distance: 235.15 mi (378.44 km).
#1 San Marcos
The most populous city in Hays County, Texas.
| Population | 66,350 |
| Coordinates | 29.8832700, -97.9413900 |
| Altitude | 188 |
| Country | United States |
#2 Frisco
Frisco is a city in the US state of Texas located in the counties of Collin and Denton, and an affluent and rapidly developing suburb of Dallas.
| Population | 209,980 |
| Coordinates | 33.1506700, -96.8236100 |
| Altitude | 212 |
| Country | United States |
End: Main Street (-96.823654, 33.150495)
Estimated Travel Time
Distance: 425 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 48m |
| 40 mph (64.37 km/h) | 06h 36m |
| 50 mph (80.47 km/h) | 05h 17m |
| 60 mph (96.56 km/h) | 04h 24m |
| 70 mph (112.65 km/h) | 03h 46m |
| 80 mph (129 km/h) | 03h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $35.26 | $70.52 |
| Mid-grade | $4.25 | $39.67 | $79.34 |
| Premium | $4.59 | $42.83 | $85.67 |
| Diesel | $3.99 | $37.25 | $74.51 |
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 Texas · Apr 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.