Is there a train to San Marcos?

No, there is no passenger rail service to San Marcos.

How long is the drive?

The drive is approximately 40 minutes.

What is the best route?

State Highway 123 North is the most direct path.

There is no intercity bus service between Seguin and San Marcos.

Yes, it is a standard rural highway route.

Seguin

San Marcos

Driving

Seguin to San Marcos

Updated: 31 May 2026

The trip from Seguin to San Marcos covers roughly 25 miles, primarily using State Highway 123. This route takes you north through rural Guadalupe and Hays counties. The drive typically lasts 35 to 40 minutes. San Marcos is home to Texas State University and the famous San Marcos Premium Outlets. It is a straightforward drive with minimal traffic outside of the San Marcos city limits.

Total Distance: 40 km driving distance, 35 km straight-line air distance.

Fastest Way

Driving via SH 123 is the fastest method, taking about 40 minutes.

Cheapest Way

Driving your own vehicle is the most cost-effective and only practical way to travel.

Compare Seguin to San Marcos Routes

Driving

Direct

Duration

40 mins

Avg Price

$6-$10 in fuel

Operator

Personal Vehicle

Route

State Highway 123 North.

Watch for heavy traffic near the outlet malls on weekends.

Travel Tips

Shopping Traffic
Avoid the I-35 and McCarty Lane intersection on weekends due to outlet mall traffic.
Parking
Campus parking requires a permit; use visitor lots or downtown garages.
River Access
Check the city website for current river flow conditions before planning water activities.
Dining
The downtown square offers a variety of local eateries popular with students.
Navigation
SH 123 is a simple route, but use GPS to navigate the San Marcos city streets.

Safety Tips

Pedestrian Safety
Be extra cautious of students crossing streets near the university campus.
Speed Limits
Observe speed limit changes when entering the San Marcos city limits.
Road Hazards
SH 123 can have agricultural equipment; maintain a safe following distance.
Emergency
Keep your phone charged for navigation and emergency assistance.