How far is Decatur, IL from Hamilton, AL?
The driving distance from Decatur, IL to Hamilton, AL is about 475.7 miles (765.6 km), with a travel time of about 09h 28m by car.
- The straight-line flight distance is about 397.3 miles (639.4 km).
- For a round trip, plan for roughly 18h 57m 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 09h 28m.
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.
3rd-class city in Graves County, Kentucky
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Showers And Thunderstorms then Partly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Decatur and Hamilton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and Hamilton.
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1
Start on East Wood Street
91 m · 16 sec · East Wood Street
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2
Turn left onto South Main Street
1.4 mi · 2 min · South Main Street
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3
Continue on South Business Route 51
3.8 mi · 6 min · South Business Route 51
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4
Take the ramp straight toward South Business Route 51
19.6 mi · 24 min · South Business Route 51
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5
Continue on North 2600 East Rd
7.9 mi · 9 min · North 2600 East Rd
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6
Turn right onto North 2600 East Road
1.6 km · 2 min · North 2600 East Road
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7
Continue on Jackson Street
2668 ft · 2 min · Jackson Street
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8
Turn left onto Cedar Street
142 m · 8 sec · Cedar Street
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9
Turn right onto East 1st Street
2150 ft · 1 min · East 1st Street
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10
Turn left onto South Poplar Street
2138 ft · 30 sec · South Poplar Street
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11
Turn straight onto Fair Avenue
3070 ft · 2 min · Fair Avenue
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12
Continue on County Road 2400 E
2 mi · 3 min · County Road 2400 E
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13
Continue on 300 East Road
15.1 mi · 17 min · 300 East Road
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14
Continue on County Road 875 East
11.1 mi · 13 min · County Road 875 East
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15
Continue on North Kennedy Boulevard
1.5 mi · 2 min · North Kennedy Boulevard
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16
Turn left onto West Gallatin Street
2405 ft · 34 sec · West Gallatin Street
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17
Turn right
554 ft · 7 sec
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18
Continue on United States Highway 51
13.4 mi · 15 min · United States Highway 51
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19
Continue on 250E
10.4 mi · 12 min · 250E
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20
Turn left
7.6 mi · 9 min
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21
Take the exit left
1847 ft · 45 sec
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22
Merge slight left
24.5 mi · 27 min
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23
Keep slight right to continue on Ken Gray Expressway
47.2 mi · 51 min · Ken Gray Expressway
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24
Take the exit slight right toward I 24 East: Nashville
1.4 mi · 1 min
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25
Continue straight
43.6 mi · 47 min
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26
Take the exit slight right toward US 62, US 45: Paducah, Mayfield
1378 ft · 36 sec
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27
Continue on Mayfield, Nashville
2492 ft · 1 min
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28
Keep slight right to continue on US 45 South: Mayfield
75 m · 6 sec
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29
Merge slight left onto Lone Oak Road
14.1 mi · 18 min · Lone Oak Road
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30
Keep slight right
606 ft · 9 sec
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31
Keep slight right
6.1 mi · 8 min
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32
Take the exit slight right
22.1 mi · 24 min
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33
Take the exit slight right toward Fulton
1133 ft · 28 sec
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34
Turn left onto Fulgham Road
136 m · 14 sec · Fulgham Road
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35
Continue on Kentucky Avenue
2538 ft · 51 sec · Kentucky Avenue
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36
Turn right onto North Highland Drive
16 m · 1 sec · North Highland Drive
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37
Turn slight left onto Mayfield Road
153 m · 10 sec · Mayfield Road
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38
Continue on Martin L King Jr Drive
1351 ft · 29 sec · Martin L King Jr Drive
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39
Turn right
1083 ft · 28 sec
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40
Continue on Lake Street
897 ft · 23 sec · Lake Street
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41
Turn left onto Commercial Avenue
136 m · 9 sec · Commercial Avenue
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42
Continue on Broadway Street
5.7 mi · 8 min · Broadway Street
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43
Continue straight
1.5 mi · 2 min
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44
Turn right onto Skyhawk Parkway
6.6 mi · 8 min · Skyhawk Parkway
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45
Take the exit slight right toward US 45E BUS, US 45E South: Milan, Martin
1435 ft · 39 sec
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46
Turn right
17.6 mi · 20 min
-
47
Turn right onto West Main Street
1 km · 1 min · West Main Street
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48
Continue on Trenton Highway
2.7 mi · 5 min · Trenton Highway
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49
Continue on Bradford Highway
4.4 mi · 8 min · Bradford Highway
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50
Continue on Halliburton Street
1680 ft · 38 sec · Halliburton Street
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51
At the end of the road, turn left
11.7 mi · 13 min
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52
Turn left
19.4 mi · 26 min
-
53
Turn right onto South Highland Avenue
38.3 mi · 50 min · South Highland Avenue
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54
Continue on Mulberry Avenue
21 mi · 27 min · Mulberry Avenue
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55
Continue straight
2394 ft · 32 sec
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56
Continue straight
12.3 mi · 14 min
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57
Continue straight
29.1 mi · 34 min
-
58
Take the exit slight right toward US 78:east: Birmingham
1271 ft · 31 sec
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59
Merge slight left
38.9 mi · 42 min
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60
Take the exit slight right toward AL 74 East: Weston, Hamilton
1610 ft · 36 sec
-
61
Turn left
4.9 mi · 8 min
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62
Arrive at your destination
0 m · 1 sec · Bexar Avenue West
Car Route Details
A richer read on the saved driving route between Decatur and Hamilton.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Ken Gray Expressway
Keep slight right to continue on Ken Gray Expressway
47.2 mi · 00h 51m
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.
Slight Chance Showers And Thunderstorms then Partly Sunny leaving Decatur and Mostly Sunny near Hamilton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to Hamilton?
The road trip is about 475.7 miles (765.6 km) and usually takes 09h 28m 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?
Mayfield is a useful midpoint, sitting about 238.1 miles from Decatur and 237.6 miles from Hamilton.
How much longer is the road route than the straight-line distance?
The direct path is about 397.3 miles (639.4 km), while the road route adds roughly 78.4 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 $63.32 one way or $126.63 round trip. Estimated CO2 is about 149.2 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Showers And Thunderstorms then Partly Sunny around Decatur and Mostly Sunny near Hamilton.
Stop Ideas Near Mayfield
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 Mayfield.
Fulton
Paducah, KY
Vienna, IL
Newbern–Dyersburg
Flight Path Map
This map shows the direct air route between Decatur and Hamilton. Straight-line distance: 397.28 mi (639.36 km).
#1 Decatur
The most populous city in Macon County, Illinois.
| Population | 70,007 |
| Coordinates | 39.8403100, -88.9548000 |
| Altitude | 205 |
| Country | United States |
#2 Hamilton
City in Marion County, Alabama, United States
| Population | 6,645 |
| Coordinates | 34.1423200, -87.9886400 |
| Altitude | 149 |
| Country | United States |
End: Hamilton (-87.98864, 34.14232)
Estimated Travel Time
Distance: 766 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 15h 51m |
| 40 mph (64.37 km/h) | 11h 53m |
| 50 mph (80.47 km/h) | 09h 30m |
| 60 mph (96.56 km/h) | 07h 55m |
| 70 mph (112.65 km/h) | 06h 47m |
| 80 mph (129 km/h) | 05h 56m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $63.32 | $126.63 |
| Mid-grade | $4.25 | $71.41 | $142.82 |
| Premium | $4.65 | $78.14 | $156.28 |
| Diesel | $5.30 | $89.05 | $178.11 |
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 · Jun 28, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.