Distance between cities › USA › Texas › Marlin, TX › Distance from Marlin to Round Mountain Book Hotels

Distance from Marlin, TX to Round Mountain, TX

Distance

128 mi

Time

2 hours 38 mins

Gas Cost

$12 - $23

There are 104.94 miles from Marlin to Round Mountain in southwest direction and 128 miles (206.00 kilometers) by car, following the US-281 route.

Marlin and Round Mountain are 2 hours 38 mins far apart, if you drive non-stop .

This is the fastest route from Marlin, TX to Round Mountain, TX. The halfway point is Killeen, TX.

Marlin, TX and Round Mountain, TX are in the same time zone (CDT). Current time in both locations is 2:06 pm.

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Lowest Price Rental Cars in Marlin, TX

Planning on renting a car to go from Marlin, TX to Round Mountain, TX? Here there are some offers to rent a car in Marlin, TX

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Marlin »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 5.14 gallons of gas to cover the route between Marlin, TX and Round Mountain, TX.

The estimated cost of gas to go from Marlin to Round Mountain is $16.70.

During the route, an average car will release 100.71 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 $3.25 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Marlin, TX and Round Mountain, TX

If you want to meet halfway between Marlin, TX and Round Mountain, TX or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 31.122406 and -97.799683, or 31º 7' 20.6616" N, 97º 47' 58.8588" W. This location is 64 miles away from Marlin, TX and Round Mountain, TX and it would take approximately 1 hour 19 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest and also the major city is Killeen, TX, situated 61.51 miles from Marlin, TX and 74.71 miles from Round Mountain, TX. It would take 1 hour 20 mins to go from Marlin to Killeen and 1 hour 24 mins to go from Round Mountain to Killeen.