The drive from Rio Grande City, TX to Killeen, TX covers 419.8 miles and takes about 7h 25m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Purple Heart Trail, Pickle Parkway, United States Highway 83 for much of the mileage,
and the overall profile is mixed drive.
The longest uninterrupted segment is about 144.4 miles on Purple Heart Trail.
At current regular gas prices, budget about $64.13 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
209.9 miles from Rio Grande City, TX
A natural place for your longest stop of the day
, about 3h 51m into the drive
.