How far is Killeen, TX from Pecos, TX?
The estimated driving distance from Killeen, TX to Pecos, TX is about 402.5 miles (647.8 km), with a travel time of about 07h 03m by car.
- This page is using an estimated road distance while the full route geometry is refreshed.
- The straight-line flight distance is about 341.1 miles (548.9 km).
- For a round trip, plan for roughly 14h 06m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM CDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 07h 03m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Texas, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy then Chance Showers And Thunderstorms
Showers And Thunderstorms
Driving Route Map
Road route is being refreshed. This page currently uses an estimated driving distance.
Turn-by-Turn Driving Directions
Step-by-step road directions between Killeen and Pecos.
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Mostly Cloudy then Chance Showers And Thunderstorms leaving Killeen and Showers And Thunderstorms near Pecos.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Killeen to Pecos?
The road trip is about 402.5 miles (647.8 km) and usually takes 07h 03m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Mertzon is a useful midpoint, sitting about 170.6 miles from Killeen and 232 miles from Pecos.
How much longer is the road route than the straight-line distance?
The direct path is about 341.1 miles (548.9 km), while the road route adds roughly 61.4 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 7:30 AM CDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $53.66 one way or $107.32 round trip. Estimated CO2 is about 126.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy then Chance Showers And Thunderstorms around Killeen and Showers And Thunderstorms near Pecos.
Flight Path Map
This map shows the direct air route between Killeen and Pecos. Straight-line distance: 341.1 mi (548.95 km).
#1 Killeen
The 11th most populous city in Texas.
| Population | 153,991 |
| Coordinates | 31.1171200, -97.7278000 |
| Altitude | 252 |
| Country | United States |
#2 Pecos
City in Texas
| Population | 10,488 |
| Coordinates | 31.4229100, -103.4932300 |
| Altitude | 787 |
| Country | United States |
End: Pecos (-103.49323, 31.42291)
Estimated Travel Time
Distance: 648 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 24m |
| 40 mph (64.37 km/h) | 10h 03m |
| 50 mph (80.47 km/h) | 08h 02m |
| 60 mph (96.56 km/h) | 06h 42m |
| 70 mph (112.65 km/h) | 05h 45m |
| 80 mph (129 km/h) | 05h 01m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.78 | $53.66 | $107.32 |
| Mid-grade | $4.25 | $60.38 | $120.76 |
| Premium | $4.59 | $65.19 | $130.38 |
| Diesel | $3.99 | $56.70 | $113.40 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Texas · Apr 11, 2026