How far is Dauphin Island, AL from Decatur, AL?
The driving distance from Dauphin Island, AL to Decatur, AL is about 375.2 miles (603.8 km), with a travel time of about 05h 42m by car.
- The straight-line flight distance is about 307.7 miles (495.2 km).
- For a round trip, plan for roughly 11h 25m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 05h 42m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Town in Alabama
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Dauphin Island and Decatur.
Turn-by-Turn Driving Directions
Step-by-step road directions between Dauphin Island and Decatur.
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1
Start on the route
2 m · 4 sec
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2
Turn left
12 m · 5 sec
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3
Turn right onto Cadillac Avenue
839 ft · 39 sec · Cadillac Avenue
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4
Turn right onto Le Moyne Drive
1.2 km · 1 min · Le Moyne Drive
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5
Continue on Gordon Persons Bridge
3.4 mi · 5 min · Gordon Persons Bridge
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6
Continue on Dauphin Island Parkway
13.7 mi · 19 min · Dauphin Island Parkway
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7
Turn left onto Laurendine Road
1.2 km · 1 min · Laurendine Road
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8
Turn right onto West Range Line Road
1.5 mi · 2 min · West Range Line Road
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9
Continue on Rangeline Road
5.3 mi · 7 min · Rangeline Road
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10
Take the ramp slight right toward I 10 East: Mobile
1 km · 1 min
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11
Merge slight left
2.4 mi · 3 min
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12
Take the exit slight left toward I 65 North: Montgomery
3020 ft · 44 sec
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13
Continue straight
332.2 mi · 6 hr 2 min
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14
Take the exit slight right toward 67: Decatur, Priceville, Somerville
2021 ft · 51 sec
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15
Turn left onto Point Mallard Parkway Southeast
4.5 mi · 7 min · Point Mallard Parkway Southeast
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16
Turn right onto 6th Avenue Southeast
3 mi · 6 min · 6th Avenue Southeast
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17
Continue on 6th Avenue Northeast
580 ft · 15 sec · 6th Avenue Northeast
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18
Turn left onto Lee Street Northeast
1085 ft · 38 sec · Lee Street Northeast
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19
Turn right
25 m · 6 sec
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20
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Dauphin Island and Decatur.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 65 North
Continue straight
332 mi · 06h 02m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Dauphin Island and Sunny near Decatur.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Dauphin Island to Decatur?
The road trip is about 375.2 miles (603.8 km) and usually takes 05h 42m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Hayneville is a useful midpoint, sitting about 185 miles from Dauphin Island and 190.2 miles from Decatur.
How much longer is the road route than the straight-line distance?
The direct path is about 307.7 miles (495.2 km), while the road route adds roughly 67.5 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 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 5:34 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $50.14 one way or $100.28 round trip. Estimated CO2 is about 117.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Dauphin Island and Sunny near Decatur.
Stop Ideas Near Hayneville
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 Hayneville.
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Flight Path Map
This map shows the direct air route between Dauphin Island and Decatur. Straight-line distance: 307.67 mi (495.15 km).
#1 Dauphin Island
Island and town in the U.
| Population | 1,366 |
| Coordinates | 30.2554800, -88.1097200 |
| Altitude | 2 |
| Country | United States |
#2 Decatur
The most populous city in Morgan County, Alabama.
| Population | 54,381 |
| Coordinates | 34.6059300, -86.9833400 |
| Altitude | 171 |
| Country | United States |
End: (-86.983514, 34.605804)
Estimated Travel Time
Distance: 604 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 12h 30m |
| 40 mph (64.37 km/h) | 09h 22m |
| 50 mph (80.47 km/h) | 07h 30m |
| 60 mph (96.56 km/h) | 06h 15m |
| 70 mph (112.65 km/h) | 05h 21m |
| 80 mph (129 km/h) | 04h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.79 | $50.14 | $100.28 |
| Mid-grade | $4.26 | $56.39 | $112.78 |
| Premium | $4.63 | $61.24 | $122.47 |
| Diesel | $5.42 | $71.69 | $143.39 |
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 Alabama · May 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.