Distance between cities › USA › Texas › Alpine, TX › Distance from Alpine to Thornton Book Hotels

Distance from Alpine, TX to Thornton, CO

Distance

778 mi

Time

14 hours 40 mins

Gas Cost

$72 - $141

There are 661.18 miles from Alpine to Thornton in north direction and 778 miles (1,252.07 kilometers) by car, following the I-25 route.

Alpine and Thornton are 14 hours 40 mins far apart, if you drive non-stop .

This is the fastest route from Alpine, TX to Thornton, CO.

Please note the time difference between Alpine, TX and Thornton, CO is 1 hour. The current time in Alpine is 1:16 pm and the current time in Thornton is 12:16 pm.

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Lowest Price Rental Cars in Alpine, TX

Planning on renting a car to go from Alpine, TX to Thornton, CO? Here there are some offers to rent a car in Alpine, TX

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Alpine »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 31.23 gallons of gas to cover the route between Alpine, TX and Thornton, CO.

The estimated cost of gas to go from Alpine to Thornton is $101.89.

During the route, an average car will release 611.95 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Alpine, TX and Thornton, CO

If you want to meet halfway between Alpine, TX and Thornton, CO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 34.885513 and -104.982705, or 34º 53' 7.8468" N, 104º 58' 57.738" W. This location is 388.87 miles away from Alpine, TX and Thornton, CO and it would take approximately 7 hours 20 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Pastura, NM, situated 379 miles from Alpine, TX and 399 miles from Thornton, CO. It would take 7 hours 29 mins to go from Alpine to Pastura and 7 hours 13 mins to go from Thornton to Pastura.