How far is Pecos, TX from Killeen, TX?

The estimated driving distance from Pecos, TX to Killeen, 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.
Road route is being refreshed. This page currently uses an estimated driving distance until a routing provider returns the full road geometry.
Trip Tools

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.

Reverse Route
Quick Snapshot
Road
402.5 mi
07h 03m · estimated
Flight
341.1 mi
548.95 km direct

This drive is better planned with a longer stop or an overnight stay.

Learn Distance

Choose another destination from Pecos.

Flight Distance

Direct air line
341.1 mi
Kilometers
548.95 km
Flight Time
00h 41m

Driving Distance

Estimated road route
402.5 mi
Estimated
Kilometers
647.76 km
Drive Time
07h 03m

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.

Arrival Snapshot
Arrive in Killeen
Sat, Apr 11, 5:31 AM CDT
Return by in Pecos
Sat, Apr 11, 12:34 PM CDT
Useful when you're deciding between a quick errand, a day trip, or a longer stop.
Leave Pecos
2026-04-10T22:27
Arrive Killeen
Sat, Apr 11, 5:31 AM CDT
Route Timing
07h 03m
One way by road
Best Departure Window
6:00 AM to 7:30 AM CDT
Treat this as a longer travel day
Arrive between
1:03 PM to 2:33 PM CDT

Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.

Leave by
9:54 PM CDT
Keeps a same-day return open with about 08h 00m at the destination.
Back in Pecos
8:00 PM CDT
Overnight-style route

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.

Mid-route stop
Mertzon
TX

City in Texas, United States

From Pecos
170.6 mi
03h 31m
To Killeen
232 mi
03h 31m

Route Weather Snapshot

Check the forecast at both ends before you head out.

Origin
87°F
Friday

Mostly Sunny

Starts
Fri, Apr 10 1:00 AM CDT
Wind
5 to 15 mph E
Destination
79°F
Friday

Chance Showers And Thunderstorms

Starts
Fri, Apr 10 6:00 AM CDT
Wind
5 to 10 mph SE

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 Pecos and Killeen.

Turn-by-turn directions will appear after the road route is refreshed. The current distance is an estimate.

Route Summary

A quick read on whether this route feels easy, ambitious, or worth planning around.

Trip Read

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.

Drive Time
07h 03m
Overnight route
Same-Day Return
14h 06m
Round-trip wheel time
Road vs Air
+61.4 mi
341.1 mi direct line
Halfway Stop
Mertzon
03h 31m from Pecos
Leave By
9:54 PM CDT
Overnight-style route
Weather Watch

Mostly Sunny leaving Pecos and Chance Showers And Thunderstorms near Killeen.

Trip Questions

Direct answers travelers usually want before committing to the drive.

How long does it take to drive from Pecos to Killeen?

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 Pecos and 232 miles from Killeen.

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 Sunny around Pecos and Chance Showers And Thunderstorms near Killeen.

Flight Path Map

This map shows the direct air route between Pecos and Killeen. Straight-line distance: 341.1 mi (548.95 km).

Pecos

#1 Pecos

City in Texas

Population10,488
Coordinates31.4229100, -103.4932300
Altitude787
CountryUnited States
Killeen

#2 Killeen

The 11th most populous city in Texas.

Population153,991
Coordinates31.1171200, -97.7278000
Altitude252
CountryUnited States
Start: Pecos (-103.49323, 31.42291)
End: Killeen (-97.7278, 31.11712)

Estimated Travel Time

Distance: 648 km by road

SpeedTime
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.

One-way fuel
14.2 gal
53.76 L · about $53.66
Round trip
$107.32
28.4 gal · 107.52 L
Estimated CO2
126.2 kg one way
Round trip: 252.4 kg / 556 lb CO2, using regular gasoline.
Fuel$/galOne wayRound 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

There is no time difference between Pecos and Killeen. The current time is 22:27:42.

Distance to Other Cities

How did we calculate? Place names are translated into coordinates. The Haversine formula calculates straight-line distance; driving distance uses road network data.