How far is Centralia, IL from Mount Vernon, IL?
The driving distance from Centralia, IL to Mount Vernon, IL is about 27.3 miles (44 km), with a travel time of about 00h 36m by car.
- The straight-line flight distance is about 19 miles (30.6 km).
- For a round trip, plan for roughly 01h 12m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 36m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
Township in Washington County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Centralia and Mount Vernon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Centralia and Mount Vernon.
-
1
Start on South Poplar Street
10.3 mi · 14 min · South Poplar Street
-
2
Turn slight left onto Mount Vernon
107 m · 13 sec
-
3
Take the ramp left toward Mount Vernon
1182 ft · 29 sec
-
4
Merge slight left
13.7 mi · 15 min
-
5
Take the exit slight right toward IL 15: Ashley, Mt. Vernon
1624 ft · 42 sec
-
6
Turn straight onto Broadway Street
2.8 mi · 5 min · Broadway Street
-
7
Arrive at your destination
0 m · 1 sec · Broadway Street
Car Route Details
A richer read on the saved driving route between Centralia and Mount Vernon.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
South Poplar Street
Merge slight left
13.7 mi · 00h 15m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Cloudy leaving Centralia and Sunny near Mount Vernon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Centralia to Mount Vernon?
The road trip is about 27.3 miles (44 km) and usually takes 00h 36m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Richview is a useful midpoint, sitting about 13.7 miles from Centralia and 13.7 miles from Mount Vernon.
How much longer is the road route than the straight-line distance?
The direct path is about 19 miles (30.6 km), while the road route adds roughly 8.3 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:18 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.62 one way or $7.24 round trip. Estimated CO2 is about 8.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Centralia and Sunny near Mount Vernon.
Stop Ideas Near Richview
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Richview.
Centralia station
Mt. Vernon, IL
Du Quoin
Carbondale station
Flight Path Map
This map shows the direct air route between Centralia and Mount Vernon. Straight-line distance: 19.01 mi (30.6 km).
#1 Centralia
Township in Marion County, Illinois
| Population | 12,142 |
| Coordinates | 38.5250500, -89.1334000 |
| Altitude | 150 |
| Country | United States |
#2 Mount Vernon
City located near the center of Jefferson County, Illinois, United States
| Population | 14,511 |
| Coordinates | 38.3172700, -88.9031200 |
| Altitude | 156 |
| Country | United States |
End: Mount Vernon (-88.90312, 38.31727)
Estimated Travel Time
Distance: 44 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 54m |
| 40 mph (64.37 km/h) | 00h 41m |
| 50 mph (80.47 km/h) | 00h 32m |
| 60 mph (96.56 km/h) | 00h 27m |
| 70 mph (112.65 km/h) | 00h 23m |
| 80 mph (129 km/h) | 00h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $3.62 | $7.24 |
| Mid-grade | $4.25 | $4.08 | $8.17 |
| Premium | $4.65 | $4.47 | $8.94 |
| Diesel | $5.30 | $5.09 | $10.18 |
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 Illinois · Aug 26, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.