Distance between cities › USA › Texas › Altair, TX › Distance from Altair to Decker Book Hotels

Distance from Altair, TX to Decker, MT

Distance

1,437 mi

Time

1 day 1 hour

Gas Cost

$132 - $256

There are 1,208.09 miles from Altair to Decker in northwest direction and 1,437 miles (2,312.63 kilometers) by car, following the I-25 route.

Altair and Decker are 1 day 1 hour far apart, if you drive non-stop .

This is the fastest route from Altair, TX to Decker, MT.

Please note the time difference between Altair, TX and Decker, MT is 1 hour. The current time in Altair is 11:46 pm and the current time in Decker is 10:46 pm.

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Lowest Price Rental Cars in Altair, TX

Planning on renting a car to go from Altair, TX to Decker, MT? Here there are some offers to rent a car in Altair, TX

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Altair »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 57.70 gallons of gas to cover the route between Altair, TX and Decker, MT.

The estimated cost of gas to go from Altair to Decker is $184.89.

During the route, an average car will release 1,130.56 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 $3.20 per gallon of regular gas. Price last updated on March 11, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Altair, TX and Decker, MT

If you want to meet halfway between Altair, TX and Decker, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 37.057934 and -102.562736, or 37º 3' 28.5624" N, 102º 33' 45.8496" W. This location is 718.43 miles away from Altair, TX and Decker, MT and it would take approximately 12 hours 52 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Campo, CO, situated 728 miles from Altair, TX and 709 miles from Decker, MT. It would take 13 hours 10 mins to go from Altair to Campo and 12 hours 35 mins to go from Decker to Campo.